{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "250198",
    "entityType": "User",
    "nonce": "0xb7e651ecb071998ae12fc02aaf89e0cf7a1caeb4df20c2c5efe6e677729dad47",
    "signature": "0x4442b23cad6f7f2a44c147c1ef4304626f7d030e680a083b1ebed9c170164e4b44ba9bf8242ba6485cdecf50979d5c8ae66fef77f5f75e0b952e8877292a23f81b",
    "signer": "0xb68FB6A5ae9015De46D9634e946c04517523Fa43",
    "userId": "134619804"
  }
}