{
  "manageEntity": {
    "action": "Save",
    "entityId": "1112417",
    "entityType": "Track",
    "nonce": "0xb73878a204bbc1442374c31d77dd36a7844f13909bd0132454023e2250f46f37",
    "signature": "0x1e704f46dac6ebf586acc922dce3de791ff2354482ecf4933a0b82c7735d2fd764f359b653a1cc4dcf315e5f9c5c0ae87b13873911905aa78b98a6e3e45d2b2d1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}