{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcdfb45e629385da342a40ba86f1cee3db981f7d01f9b6710d9e1188265a3a8fa",
    "signature": "0x43a2bc68abf201c8b0a671b79add299efcafaf6225b7c6589db75387130ab5eb2e8851c15c2eb2a28ecf9c48cda122280342aa61e97a8ac087909eefe62354991c",
    "signer": "0x6164d22C5753c6E9f1ec157dDef5A3C606E2f10D",
    "userId": "534038283"
  }
}