{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2c8cd15cd4bce2557580c9505d6f6642daa5da2e08b4b8d98973398081afad8e",
    "signature": "0x22360438f53024fd664474314f40e1a2cdbbd2936ba98574638d06372199fc57196c60c0189f965bacd40ed23f9cf6cf8ff6f2a4c2d82a80b2bbc7fa9771fa1d1c",
    "signer": "0x14FF2Ce3bf23AEeC9C140996251F6f85D8e99431",
    "userId": "53273933"
  }
}