{
  "manageEntity": {
    "action": "Update",
    "entityId": "21198878",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieral73eoo4jcixsc5x5wzbaezdhtiex775vtnaqb55hfvvly4csu2eq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1383306404},{\"type\":\"playlist\",\"playlist_id\":1490231555},{\"type\":\"playlist\",\"playlist_id\":349471529},{\"type\":\"playlist\",\"playlist_id\":1459751981},{\"type\":\"playlist\",\"playlist_id\":1718275804},{\"type\":\"playlist\",\"playlist_id\":1814156473},{\"type\":\"playlist\",\"playlist_id\":20900596},{\"type\":\"playlist\",\"playlist_id\":353524116},{\"type\":\"playlist\",\"playlist_id\":2130367181},{\"type\":\"playlist\",\"playlist_id\":1214382185}]}}}",
    "nonce": "0x8a385134aa28d0eefc89f2979a02803356dd3b77085aae0b51404b45ccab9106",
    "signature": "0xeec86ca8c22981495551b43b2e5af9f39dff78ff0d0fa1f7e0201c7f166ce3b35ab1599d2f696ec2adcb1656d9493a08bf27cf83ea41535f37eb1b0c328624c31b",
    "signer": "0x8b7556E7750Ee0c39Fa7aD97C314A99994C405Fa",
    "userId": "21198878"
  }
}