{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325172820",
    "entityType": "User",
    "nonce": "0xe1e4e6701ec7aaa6324dc716ec2e444375d87908b44205fc00a1d2801a3f5ac5",
    "signature": "0x6c5d21a0f494a0ef8eddbb8c9219d731d0eccbede23892ab0d29edc9fa639d2a1e19c234aad11a96d1c05ca7c5c62a302c0f4a6925d285573a1518c31fc791d51c",
    "signer": "0x2B55314d733BC60522711F9B9914f271d97aDD6B",
    "userId": "224685891"
  }
}