{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "904405512",
    "entityType": "User",
    "nonce": "0xea2ad7f32fe80692a4b29be1eac3d12f4d4ceeb533684375a433fb3e4afdf2f4",
    "signature": "0x27a161cb26395b20c157f898b8cb1f26a8838113bfb3ab7eadbe55dfdd3ec57f66244fbb8e0c48cfb376512a2f14ae66629f0006712ec5d2569c655ee025ef0d1b",
    "signer": "0x4810fE66B3A42DA4cb34b622aD9A069C293c6b86",
    "userId": "445042807"
  }
}