{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7f942604d2c23981f57c236accc856683ed17847ae7eaa2f8db17741ce828a41",
    "signature": "0x2908a7f7b888d212307f2185636b06e38ca9d2d2a27fbe98e0ec2c15cca599a442aca5675946e6142624bd392e9cf9504d4376584429fdafd368736b7bce4fa01c",
    "signer": "0x844940D4E9534dA1100b0E9c3eC5D02a4fc0FF1f",
    "userId": "117156175"
  }
}