{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54122",
    "entityType": "User",
    "nonce": "0x3824b1398ba400b75eb7829252b2a1cb943c49423018ca9245b4cd8b1878d94d",
    "signature": "0x089748c215a2c74e79d7bb87533e5b6c5eeb50d1db969f3fcf2e5237e029dfe209ff849b8d30b927ed1d2181a9ec9c5dcb6c96d7a5831624cc57330ced234b261c",
    "signer": "0x243f92B83d056f818b9b95664A8B7A86805A3E71",
    "userId": "111448"
  }
}