{
  "manageEntity": {
    "action": "Save",
    "entityId": "114013474",
    "entityType": "Track",
    "nonce": "0x947aed22ea9c9e1eb6cb11f35868709ed0b61ec53d228ab893b761b0e2fbd3e5",
    "signature": "0x27531877e86e9e849886686e3a4520d70cb432938844fc6df14c2a378a167bbb495cc6088113decce83b646c84eba540b9272fb227522b0f7beaa3fba0afefe01b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}