{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "674981811",
    "entityType": "User",
    "nonce": "0x7148050b870ae144b4f5cf1d90ad0215df64e73e2b5f3f953c39ba4f8663cfcd",
    "signature": "0xed3188bbf3f426ecf064e95a1448ef5ffb61d99e44f7fc53d1c44745798fd5eb19c0fa81c023ddb4134aa3282de81edbd32f4055e63d515300fbdb33ae1a1a671b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}