{
  "manageEntity": {
    "action": "Save",
    "entityId": "311082516",
    "entityType": "Track",
    "nonce": "0x4a825ef238e35471a97d0a54b5fb6eafbbcc0b956b68b9da49377919db8dc9d3",
    "signature": "0x1328884fe35a7347da9ee28a51023e66ca6807744af43ce10a1eae64c665a29f2906e42ab645615f5a85a8013e2b4b37e3df694a7119b4b0c83a038e7b03ef0a1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}