{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "999692142",
    "entityType": "User",
    "nonce": "0xcddc029a8e20b500f7605f4c906f0ded36b7b5666feffeadcdbec5b1827b8505",
    "signature": "0x3fba1a35739e096f6f16d3a3a15cb9e2fc83fbd4c81e09894b7cf4c4cef69fd5260e84d860fec0b6dbdf5ad5c3a10559e2e4316fffaa1f316c29660a364061451c",
    "signer": "0xDf325b3870fdf216bD42916714b1AC2FA2D27425",
    "userId": "2009913"
  }
}