{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x689840eee275b50070ee1d4dd5ca5bd20867a9c58d22280812957d9a0a415635",
    "signature": "0x5342c5ddb22b3cd1078ed46950cbfd0b0fba6b40d8161d163eea47c3fc495f03288aaa300ef1b08ab684270ff939060c273e0b00b277227941cf1524c5d8e9201c",
    "signer": "0x14FF2Ce3bf23AEeC9C140996251F6f85D8e99431",
    "userId": "53273933"
  }
}