{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "978464946",
    "entityType": "User",
    "nonce": "0xdc0f42fa1e3d78f107a5397c96bf3a25517b17f9a7a04e15f2a8480a9e39e7d1",
    "signature": "0x87b2e7626607a7d360b853503a9b86c708a83cf75ccacb57823c00ef0646a86e1959e9e56f20f949c19069f834d23fb690ed0726d4dea903711c73d1c2f9ddf81c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}