{
  "manageEntity": {
    "action": "Save",
    "entityId": "129059",
    "entityType": "Track",
    "nonce": "0x93e1bae2c882613cef09623536a0bde304cc47724a23660b65892ad666d34dc3",
    "signature": "0x7cec07e545e28ed4c6187b1ed9ad745dccf308272c8bd6201921b34a4364b8d44b9698b5bc2262b2fea34145dcfe88a7a42db09d91da84e4e2ba314e52d012f11b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}