{
  "manageEntity": {
    "action": "Update",
    "entityId": "843617017",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera6wyl4fzdkbmv5fqhojzyot2xgkk2uhfdb6gsrpqpwgkcjheehnrq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":639543760},{\"type\":\"playlist\",\"playlist_id\":546343000}]}}}",
    "nonce": "0x2ba6c67c2a5f091052e039fefc84dc8a5357afe52d15fa31a5433c26667fecf1",
    "signature": "0x26ee523fa9d697746e9e17625b4a9fcad9c4db2afe2940541b32bf285428e79565d02e6041d75d05556c23bc83798390876384f3d2e1da9dd37a306ccbadf9e41c",
    "signer": "0xD3369c611465F11512aF702F20e281a94fd13be8",
    "userId": "843617017"
  }
}