{
  "manageEntity": {
    "action": "Update",
    "entityId": "21198878",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierafmz6osemtjapv3fa2nmujvkgcmcqqpcnkbog47isvr7mosryd5da\",\"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}]}}}",
    "nonce": "0x825fb96ef3119c913d1f52a15e3b77c6e56b530ba703f9ff689ac22408ed0e26",
    "signature": "0xcea42efd36c43918a0fba421a6611772d2ce0805b13df5d591210dd3b935c01b3ef9b38761daa5c9446ee795bc6a9da1f4251479ab97cb6d3ee2bd65ff4b33961b",
    "signer": "0x8b7556E7750Ee0c39Fa7aD97C314A99994C405Fa",
    "userId": "21198878"
  }
}