{
  "manageEntity": {
    "action": "Update",
    "entityId": "551271495",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc91495c6cece2befc6bb0bfae1d0b1e90e1fffec151e66c1138118f787d4fc9c",
    "signature": "0xfbfb86f2df63342a365bdb02ad6842a0e012c6f55a5837f644bd4227c06a3e452b945b9ff34a1846051a3b43767fdd462482ecd44538995c08bd5843c9dd9e301b",
    "signer": "0x3aae593151C2D2A71F96C0Ce45e811296a1f58cd",
    "userId": "551271495"
  }
}