{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "151423",
    "entityType": "User",
    "nonce": "0x6f64d56300b652756cc3eb5861c0f22e99702b0cb6398784894777de4d174458",
    "signature": "0x4194518346490688a0a5985091f16ebfe44c37bf96bc7c9dd74c29f3e93252394f3d2c93bc81f4d65e0827db7d42a771d8bfb8ccdb17bfb79b8652f8ba0549d81b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}