{
  "manageEntity": {
    "action": "Save",
    "entityId": "200230115",
    "entityType": "Track",
    "nonce": "0x9eb0d9c0b1e2f98f707fec28e86ffa499736e3f180a99f837205f1d8389cbc16",
    "signature": "0x6f3caade58582c1730b91a884fe45e9d562474dc3cdcb26d366a4e541639c6d72b9cad8f4281ab7d87a87fd8fb3229dcec825c2080813afaf7330cda2bd1e2af1b",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}