{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1712424920baa8c0b9d8a15a8c2cc065cc98495ca4c9b00e0cd9e89a3069de14",
    "signature": "0x2e0c2c7cd9f260e33a6c8bc1319f4ca3f0b5d61525c9c83b207947ffd98575714dfd1043c81eccfa790aed3b904b674eeb6782fdb861c3dd5f213d3d866ea1141b",
    "signer": "0x532a72Ac9fB52B1ED282c27d1d2C654AA73ae124",
    "userId": "896586517"
  }
}