{
  "manageEntity": {
    "action": "Save",
    "entityId": "1827268017",
    "entityType": "Track",
    "nonce": "0xd0310951c878c93b2a6235f6d7f31a8fa12b73e4c8670076c7bc170a14045be6",
    "signature": "0xdf994e1d81ffaef97420384c5ce60cc653d34fe25e1c1f0ce9ae68653ae99f672d910fb6ec39cc529d459e11cfdaf37de89be850dd55a8f3383da55e9235f32e1c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}