{
  "manageEntity": {
    "action": "Save",
    "entityId": "61795087",
    "entityType": "Track",
    "nonce": "0x4451a7bf07eb9fc4f05049fa20727341345439119ad3b2b2bcb21037ae40636c",
    "signature": "0xa3a5bdeb2d40e937ffa29bf42cc848a03951a5727b9469075a39ca8f0a6804663001b92da978d17fccf1dcdb1df76e894d2abc134315a56edd4d31e28d51095e1c",
    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}