{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "240540",
    "entityType": "User",
    "nonce": "0x819cfd9c319a23456933bbeaad027dee35821847bb8c6dd26da4fb167de98b6c",
    "signature": "0xc60d7fd4f0e6314465707946ffd64094beeb0b8f874208914a320a095df110021b79b4ffbef42dc45fbb014013179d934870675b69845cc8fd586a8c5515a1541c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}