{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x8bf625f68e414bbfaecead437f03646d9553fb94ad35de0214c5710fbedbb1ae",
    "signature": "0xa1e30cdb0407f61287a06cf1a44f06676668a095762202bf9f53f12bef20fda50d4c904ce81a6b6a06d1538639c92086e0009c0b284eb0bdc5eaa3a1698888c71c",
    "signer": "0xE466248f391B5f99247E259e38d4f898225001e0",
    "userId": "260762194"
  }
}