{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "208551",
    "entityType": "User",
    "nonce": "0xb77349099c0a1106f3134ced2418cfc8b324efc15c266e9e787a9ced958778aa",
    "signature": "0xc410cc513185215e48da8ffcc2871aaec37db832ae9e9a900d2d4e6a45f3480e064aa73b0eb095d3cb426891a83dbf93a4a384a97667e029dcccb507e7ab4d5d1b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}