{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "954705651",
    "entityType": "User",
    "nonce": "0xb9e612dc683f35b76afd495641e1fa628ae9285f315671398714a5501b9abdce",
    "signature": "0x16a97218e41e66e8c915f0e6e813e7f86f14fc8a1a13d5e0cf44448c385ba7eb44c9abab0659375c9c3a842205ce62d74fbf1fbb3a5ee64bb5587c44dbbcc64b1b",
    "signer": "0x1EeF7f4505C388ca4a4B9A8fC01FcFa7c805D3c5",
    "userId": "17766667"
  }
}