{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "599751364",
    "entityType": "User",
    "nonce": "0x6cd92efeeb3574e89605e562e266a852d9d058f98ad96be696dff0490f37bbe5",
    "signature": "0x738d79e53d2c4f0c4c4c632bf6cd953bd8ea8a80bcfa7038605312a544261e2a24ae1b6794ff0fe4fdf1524f588f26b9703ae9bbbd1ac3a96f6b7b144a98b8451c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}