{
  "manageEntity": {
    "action": "Save",
    "entityId": "828497626",
    "entityType": "Track",
    "nonce": "0x279b59f814e918b3f4f2ca26de4894b51dfbf5d5e9b4325ed16948a09040c9e4",
    "signature": "0xc021edb4e475fd0e80048160ee080046f335e382c84cc5e10b83a99c0df9f8571a64c29573fb29b1bb1414d7386ac292b60cddab7c4e9a95c67034267c8eb1021b",
    "signer": "0x27eB4b469aE053b72c26B3e9c68a655390Fe24fB",
    "userId": "42216"
  }
}