{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50672",
    "entityType": "User",
    "nonce": "0xd743d13395436791c350f5deb99e4d4c685687af6d97325989b220dc5bf254d9",
    "signature": "0xadb9673e9dc91b81bbd9f8cdd9994744597e947f7e79d5502d265bcec6b3abf310d44ca69591fd698d916d6b922a6befec062abd86d898bb56256573f01dcba51c",
    "signer": "0x16BE3cc7Ee03C75AD10a94fb7234B045D351825c",
    "userId": "66529124"
  }
}