{
  "manageEntity": {
    "action": "Update",
    "entityId": "21198878",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera63jeffpmbtxms2zjefhpuoscd2crnfyjyekrtf7witpeqinszaha\",\"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}]}}}",
    "nonce": "0x2a0e96a1ad56254e195dac2ceb0a102ea38855920084bc550a48eb2d99ace3a1",
    "signature": "0x535d9f7127de54cb0b81b49e3e1acd7dde3bfc1de8781075c99c07891d5532e23dd900b12596cfb90fa745a2ca5f118c3b56188ef200deefa311a2a59906f1ce1b",
    "signer": "0x8b7556E7750Ee0c39Fa7aD97C314A99994C405Fa",
    "userId": "21198878"
  }
}