{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3538",
    "entityType": "User",
    "nonce": "0xb270b3a5a54b2aed118a634d89f26aa6c2282d3f7c697907d6b949ffe84ac663",
    "signature": "0x9e383262341e4890d00a25dca34432882607b8d01b56aabcf18b72c5efb6d00b47cdc8c1b1c68c5802bf20fbfb4d5051de3ebf005c2780171390a08d6acbc0d91b",
    "signer": "0x96e9FcB3bcf2B4B9B7347B5ba96A6a8813527DE8",
    "userId": "319177310"
  }
}