{
  "manageEntity": {
    "action": "Save",
    "entityId": "1063582988",
    "entityType": "Track",
    "nonce": "0x3d19f29897e0994cc5423992d41feee01ecbf3a117c2395e870a6c1867b5447c",
    "signature": "0xece507de979ee14c1747a2def29c9bb158449183658093fab2e52c1ce8c5bd8115ff0aa3259f174c33194245deffaff11e862fa8e12c110f9f24dfbcbd8ccd7c1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}