{
  "manageEntity": {
    "action": "Save",
    "entityId": "6625",
    "entityType": "Track",
    "nonce": "0xf73b8c3d1d12f01e2c8dfd7c3a2094f212f7f436a6d969090ea0af59f1c89072",
    "signature": "0x18e4101412fbcfec220f356212101eeea7d93c0fe0a0c994db8b27be84884c8a2a351996f1d9158f2de9681314b7864bc3d0d17b47da1540c4478ea37512ce3c1b",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}