{
  "manageEntity": {
    "action": "Save",
    "entityId": "1924564487",
    "entityType": "Track",
    "nonce": "0x32fde417abc7830209dd8fa6761689a2e62414f2b549af218523d72dfb84241b",
    "signature": "0x963645a05d3806670dfbfc82057f7c0ca2b27dee9981404042595b20be04b40e6ee77cdc90ef0dd7ed904b2f4b0d0ea61fe6b915a02e8c11718c00168f4b109d1c",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}