{
  "manageEntity": {
    "action": "Save",
    "entityId": "265417695",
    "entityType": "Track",
    "nonce": "0xaca66b1b9da370f3da57efb3949f470df21cccd123b46f6592398aa4b2e5a8ea",
    "signature": "0x0b3e5008812e60cc3ef9be9e986ac8d25e848367a19d21685419219689015a8d7801cf8c179f3e9fb1ded036c2a92b9449e1bcbbb3468d2981e319cd9199df401c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}