{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1477402",
    "entityType": "User",
    "nonce": "0xb929dcf0758bd68cc145d9a84e9d215b54acf09022735f7f30465a3c6d09992c",
    "signature": "0x67acfc7d3f5f47c46d249990e0545315d405d1948fa08aeea2a8d30cfc5acb6f25d56646e7b668ac3cdae5d530c070993eff4d0655d5a8401b23f2c3abdbd2ac1b",
    "signer": "0x1A1bd7Cf1b867a8f368050Aca1C77acFF3053522",
    "userId": "230449789"
  }
}