{
  "manageEntity": {
    "action": "Update",
    "entityId": "590738691",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierakmhwjldvfhetsfcia2ljimdsxp5uvs3ibneaxpihhy6m2oupt73q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":83308}]}}}",
    "nonce": "0x6f6fb4a218ab6110cda7956709e002acca5651eb94446c687467047be7f93741",
    "signature": "0xed14b6f188227a7fd8b3b80517c913277a25c67838274f16ca85d9f9ff57e68e5fcd1e12336887dc9c380915fafa5ed6a3a19200138c1993132daeec41f936961c",
    "signer": "0xF823c89ddde51BA039A3E513f5b1DB581E922035",
    "userId": "590738691"
  }
}