{
  "manageEntity": {
    "action": "Save",
    "entityId": "1184297343",
    "entityType": "Track",
    "nonce": "0x2db63b2ca1d021ea5b7904e9e548343a6a4d7fc83549cfc8880e964dcf7ffb40",
    "signature": "0xe0515934aad8d8a88a891c546acd55bc755ab5b7ef559420cd39e65f608ea9502bcdd729f50b3e13abf9aa23144e983e40a82018a3dd8899ee64b1e84a4c4ff31b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}