{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x43fdde0ae46abfc2ab5b5325da6e02fd8e78e41f7c947b0b80c7befef826ccf4",
    "signature": "0x78ad566b960ebe62c705f47971240bf5f6be58ed3359f9f31203531b6693055506089c84006d04f6a52631262c1a63edbb967758bcc5a981d807c7550fb7e0521c",
    "signer": "0x6B82c3a916F7Bd387ECc8EA9070fb09Ddea3A590",
    "userId": "899109893"
  }
}