{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "52309",
    "entityType": "User",
    "nonce": "0x9bcdd4e8cbb5c0e7fd1ddc9b3dae7e14ddb11271a719817fec8b977664114512",
    "signature": "0xdb3977b01a07609cd4ea640a676e0f38514b6b0112ece06c3d4096e1ba3a5c0f7b03049d8d23f3db9fddd85070e17aaa3ced71ebacb8f936939e60b340fe65a41b",
    "signer": "0xD7Db519a2A03374B0548c02822bE88402aef1E5b",
    "userId": "715241773"
  }
}