{
  "manageEntity": {
    "action": "Save",
    "entityId": "1347153054",
    "entityType": "Track",
    "nonce": "0x16af13e84a6347bfda6cff7688606484974f8799b0abae1ec09671b2ffd81b29",
    "signature": "0xd32cef41466e69fb4d904737a9643ea101371996373a36cb751bc27404c38a7a54f0c9b7bb48042f720f0b22d300c8819fc389692a5be3c353794c797750faa81c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}