{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc7d4bac252c77045364bf909be30861f706eb0c940ed823a314074b672eafd79",
    "signature": "0xe5ba453b8268c1ae4aff2abbfb96b56cdb58cbbbb68344fdecad8ceae712a95a4db8e1988b6c3b96eafe106519f8cc80b053b151ec62537f64518588a41efc871b",
    "signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
    "userId": "162770660"
  }
}