{
  "manageEntity": {
    "action": "Save",
    "entityId": "1289621670",
    "entityType": "Track",
    "nonce": "0xe149a025843c70faebcebac03033e8530735ccc9e77484a69f29e2cb85f9ab17",
    "signature": "0x13f787f020225cee032691023caaabfad0f88a6311b491733b8628d2dfe14b3b4b6a95d468dd2f6b28ee3a059f1d408df70a27405f6cf5715aa12c9e2dc21df81c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}