{
  "manageEntity": {
    "action": "Save",
    "entityId": "1379869069",
    "entityType": "Track",
    "nonce": "0x9beaa582a689c50ec4de1f339dc856058286ff47a03401ddd5d41d5971cee017",
    "signature": "0x4ff4423e6fcc68a68edf3fba7e9e40c6380bca5c1ced3e09e4e20b8f75714c2e400d82e73a7e1a1defc9914210e38cfc84b3721930e1e8a918323167604d50101b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}