{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1686877",
    "entityType": "User",
    "nonce": "0x5736586978cfd5825080b17d65917a16dce13119db861a209f0c7960d42d57f0",
    "signature": "0x3f60673ec0dc55eb5c6a789281e99cafa92f0b4c03762491541b52c0ee45e1f73a1b78e79ab7f487641b69a119a675f2500f844f20e5635210a159654d6395e81b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}