{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xcf469b2aae5cb84cd1b5f66c3361d5331b59babc7c515266db675381a2c102ad",
    "signature": "0x3778f697e8b32c0ca39e9631f9e66e34457e57e4bbb3c41c79327c5a037d9c9f0ba779587f13248b0c2101ce9b8dfb9d0874cc436acb3a22ff670688a494826b1c",
    "signer": "0x406fd2b6f6C6cC5622Ac1c5799cE4911D81e02a7",
    "userId": "461949730"
  }
}