{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "136844578",
    "entityType": "User",
    "nonce": "0x8df6566f52f2ccedf71bd5a5d64494e062b4e85eeb0abfe31fe85b0629e9406c",
    "signature": "0x1493f66c05713f682f44e049faba6193248062f5e35f0d4dda329b5946d93f0846e691afd9903d5a6f0851f43c6053112673816bda870eb0d6daa0cf7c45dbce1c",
    "signer": "0xeFC9B78A20535768B9d5BCd2702b853bd5C0789c",
    "userId": "333246"
  }
}