{
  "manageEntity": {
    "action": "Save",
    "entityId": "845807113",
    "entityType": "Track",
    "nonce": "0xada3e5680dbb77c14a2066858242065d23bd7241e28697d0ae44aded9648e228",
    "signature": "0xd8878994bd547128314a8aa5ad76b545de80eb20c9e18ad57803709f594020ef3299a7db0e4b9076dc2a36c2e7d5fed04d6cf9a6a5974468091a0242c3c3b64c1b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}