{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "787102835",
    "entityType": "User",
    "nonce": "0x8fe41cc85bde32126cf06201bb31d6120e8570edcf47e724866ac3573d7c5e36",
    "signature": "0x2f8d7e7cec6bafc0537f3db63d26e9cd72ca4f9c1da9ec0a9a859acbbe8b86fb11ba8855fadff91ff2558d9112a7925430b4450df6692c6538950d773261ffa21c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}