{
  "manageEntity": {
    "action": "Save",
    "entityId": "1180225211",
    "entityType": "Track",
    "nonce": "0x222c9a606ace1e5d4315f00dc61f735fff1780ca477639072536f7c74298ec57",
    "signature": "0xffa6f7f77ecee5296a9cd302a9211c6d3e0ba5162885be7453c1743101e778d00aeb862d9735ea08c4b5515f18a618adb26dcf2a25b9fb2d02e36afafad713c21c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}