{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18103630",
    "entityType": "User",
    "nonce": "0x77e369fdd3120977aa397728503ef94d1d9131fdf1bd264244e950705334f814",
    "signature": "0xfb8a8e5cd8913650ee0e9725b31f44c0a84ad6af9399442016d4d28c35fcb8e71c4e7ec4f5b823315d4b7b7a3d844925da4b776f8c73c32ad047f43f745f1e561c",
    "signer": "0x3F1C98a466b3211b621486F2fed5394602a48C01",
    "userId": "392596236"
  }
}