{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0x37820f170f48df1a1f8140ad197623d39c99a035e1173b3804711370a21173ec",
    "signature": "0xbba4d10533e6d6e9657f7bc2e97b2d15e6854f12a7d3cc4b5c700920b99808aa1a4cd0cf2996aab0889dd8b849f9ca717cd435740bc2e9daaebe82bd1ebd23d11c",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}