{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "683609933",
    "entityType": "User",
    "nonce": "0x5562e933388300c0df12d9bea15aeeede9bbc597f0f2f92f3d34fdc53d0db7c3",
    "signature": "0x54bc7306aea31b67e682d87d78ce18a6cdea54daa0ccfc7c5dde2de5daba26440e0a6865070082b5748778645e2bee7261c349fc9b7c55c0a546258a4539023c1c",
    "signer": "0xb51B50C9b7d88C66d31539161F4BA9Dd72a17dF5",
    "userId": "465531556"
  }
}