{
  "manageEntity": {
    "action": "Save",
    "entityId": "2109314321",
    "entityType": "Track",
    "nonce": "0x33477320f4f62f5d1011742e09c876fb24223e4ef57805e99bec7391a39e690a",
    "signature": "0xf3e8c44e9a52d7f975c1f2ca874f021834446d3b28e47add4a5e6d40d4951910364402b96b40edb4ce859acd51b392299719035d0a933fa67e401e5421c331bf1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}