{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x889492dc7ece76076b99a00d81a598c999a06fefb163204c82a348d545766f80",
    "signature": "0x5d560590d97b87f864297bade374d406d1f5b5839333cc1d9357e50f7215673c015713d31f56f144d510eb0d0920997f794b90052252491ed09ac4453022016c1c",
    "signer": "0xf4FF06A90ef2b7600a65C6F9aE3448AEa0Dd805E",
    "userId": "565831411"
  }
}