{
  "manageEntity": {
    "action": "Save",
    "entityId": "2011766677",
    "entityType": "Track",
    "nonce": "0x47a7c0f03926dbc19868e2f127d859e3a39943fa7a1a2aebf4dcc5fda70a0e3c",
    "signature": "0x6366ae7c7b9326a4aa0e98526072c9090734cbfbf622bbf6633ae9c246f50e9d095cf912fba22c0dca58e55a4e118c6032ba6d442f3ec83ae78613756f4330b11b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}