{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0xd20d665bb438053d5684c3425b87a37a0403ad6dedacf244e4b71437a579dfdd",
    "signature": "0x66340895b748b3b01dc3f6dc0469cc132be1b2ab198260d210aafae8b1f1b9866533ed72ff3caa1a3b19f8542050c64e7e5d5364b64c0131f8778c023a4b07301c",
    "signer": "0x51eb83B482b61e1b0E5443cD8475874Ba64aef1F",
    "userId": "857012202"
  }
}