{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xfa3c74d93395f185d07eb4ecdf85ca5a2d01c252d3aa6b8a9f8b2b9758e9d7ff",
    "signature": "0x4ed722f67cef34c0d5e9caa5c8d8b7d8d04fc8a1286208adb4b4a420d661538c387b753ca5ce9e2d373d133b90868f8bc5d6750a85b69b1aebd79fc1c736de8f1c",
    "signer": "0x9d5d1f1a59bB255396F7F1e7DeB307A4F66f15ec",
    "userId": "429311703"
  }
}