{
  "manageEntity": {
    "action": "Save",
    "entityId": "368210",
    "entityType": "Track",
    "nonce": "0x033b238d997696701c07868578d597a667a4529f18ffcb97070941fcbdb471d5",
    "signature": "0x9d47ad6fa29b5e470d44ad9a00249475efd09a60cce03a27ec7a86fe3e72f64a33e7b9c1f6e55ffe926724b44f0006cf850efeefe9cb2bc08d709a053412acb51c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}