{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x525642a74dbbb5a74bbd51e281cb0215d473b65971606193977bc7e290703319",
    "signature": "0xbfb4d243b37b20078d6b6ae249523f9df9cf6152fd973d80ad957accbac0310a4ba3b5309504fe65130d7351879fa59362a23f465a3322fee24a6962b3bfa0ff1b",
    "signer": "0x1f779885d92f15264D7f4EaF616Ac1F3c791b4f0",
    "userId": "723021935"
  }
}