{
  "manageEntity": {
    "action": "Save",
    "entityId": "1495773999",
    "entityType": "Track",
    "nonce": "0x1c4e8dfb9eeeb0abf611111aedde1ec4f64cec44f532d78312e1dfa14705c90c",
    "signature": "0x940c9aea59d36efdb32b4a0d4103510f96f34de1c8a586656780e7319cc9437b2005eb513b54a689e54d4351fa82077d9436219457556a9bd75059995220ecd81b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}