{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x8a180eb17ed43fcf878d0d5a95da28e60a5dccb2cbbb43eb4596d9c3338eca91",
    "signature": "0xd70abd1b5a2f0d8938abb0f0df5d8f7f6f3ed5e75f9bf35d7ac93d78ae5ca83b3ec8fa854cdfcd0edf5ba0cf0c26a984caa5217e4c647e09aa1ec1c3233310801c",
    "signer": "0xce1fB8A1818a6b21B6d7a5d092bF71093065AAcA",
    "userId": "496820532"
  }
}