{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "854498636",
    "entityType": "User",
    "nonce": "0x7a91d7e6e1cca3a6af57a5e7b19cca96472cadaa317c0e828d550102241d9cd9",
    "signature": "0xcaf5e460d41bc72880dedcc9b5448062bc66d0332b065c1e692b9d306b04749179c4e79fe0dddecc27aade3563fc9d497dfc62c2115acf9a92125803851626791c",
    "signer": "0x8c3aa6cf594458763078BFd2ef8282051A8DBC16",
    "userId": "576672259"
  }
}