{
  "manageEntity": {
    "action": "Update",
    "entityId": "622904131",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierav7fvvnnxdsnfwxfjhpya6siueguzobg6odpqfxqtxig455y7ut5a\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":245996690}]}}}",
    "nonce": "0x925cbabc86684ec8ab3df83aa481655467b54c380ebacd6e3eec501f8d94051a",
    "signature": "0xf47247325a1cccc421efb1387ad8e6ccbca8c315df54fe046d270de0b237e8f86e11500b35db55a7fbf2b7ef5c691314c9d06f654cf82038fe90a0e0261b0f111b",
    "signer": "0x5920480C6a50aCf2DF391D5fbEbB34F9BeF2bb86",
    "userId": "622904131"
  }
}