{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x309b1a55c358c903df6e27844d401cd2c28032eb5d6e411a07ef34fa7cc31998",
    "signature": "0xab9ea76fc9a7dd4050e78e39f97be7c803af0bfcb74237da866a951944f4564a338373632a4142e0a1913c6912664f6c052f38e5ddb257788cdfea9efdb493701b",
    "signer": "0x96b669ee63c4887D3610De12B22682B4b08ADeEe",
    "userId": "129688171"
  }
}