{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0x1610818501802b079c9772d537a80f7624b6a8db0a35ba5eb0da08bc20ae3ffa",
    "signature": "0x8cfa66404260a8afa33eba169ffd2ad47bebd6c68fbe0c8583a950036fbb56bc34bf5e2b8b0fc6efc715b6b7fcd89417bed3570d2b2a418f9742afc32f3c4da41c",
    "signer": "0x1e9F846fdf1a89ba11e2D67fb4831B7E14ae8940",
    "userId": "617992566"
  }
}