{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x436b07268b9895e997949699d8061e38569c2c5bd8207979729e8017358fe416",
    "signature": "0x5646cc94357734c176f24be09c30052565ef678657e3df3416a6af6a05f88006567a827b86b92246d8991851d5d9ab6694f071f838855dbb45b4e5dba6a125441b",
    "signer": "0x2147B2CDf9246a066970f23473B35056BD42dFB2",
    "userId": "577412293"
  }
}