{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0x4b520613cf7a898997002208c28a1afce043992b9a5e4cb5409d7322ccabc125",
    "signature": "0x93d949ca7d0b7e02ec0ca3889cb9d32445431accc428b508cf15e5930616f9cd040d6370adcad6da86f09f8346cd8d20f3f93aa888818451ec7df4e0335e691e1c",
    "signer": "0x98fC2b30E6e70e62dB2b5fAE7b0292DE3D4323Bf",
    "userId": "480962013"
  }
}