{
  "manageEntity": {
    "action": "Save",
    "entityId": "102453052",
    "entityType": "Track",
    "nonce": "0x892b37039a98e15002908af90638ed8452794218063c42528aff0f55218c91fb",
    "signature": "0x4af43cbf224fb5613e4acc0c696220765efc9ad1f312e55692d5e5f9599467aa624577f3bdb8864f29f020a13dfde805498e45ac422fd234a7edc0512eb459b31c",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}