{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "309421",
    "entityType": "User",
    "nonce": "0xcae34264fd0216dc9a27c7deadba53adcbf670b1b95e642c484d18d42c847a1f",
    "signature": "0x36e5d88087042c7f3a6a29214194dc21f5161d80425f13962ae55a17f863dcda5c53f66e695acb43f1784b0949510bf564b92d64fe00f06bb281ad5760e5d8ed1c",
    "signer": "0x97eAfE883FbF33a8b75f6f37440caFE5CC452d3f",
    "userId": "849776474"
  }
}