{
  "manageEntity": {
    "action": "Update",
    "entityId": "642005424",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5510470d8461511a15dee7d87bc0012e7e43de722425df5e4a3f4b7d2d6e9e62",
    "signature": "0x57337f45c685880d93fdcb1c24cdc31f86e0faff773ab280609bd8b4b6c667a755c70e529472753ea56fa5a997ef365bcb83241717d573d642368f849d01f7ce1c",
    "signer": "0x5dC0866aD3299e359d5b6331246995d7CBcb518b",
    "userId": "642005424"
  }
}