{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "174900",
    "entityType": "User",
    "nonce": "0x5e3b6f60b4f20dd2617be2895c9b8bef63cce96c2193d4b5f28b9da85b09ff89",
    "signature": "0xfa90bcb6ffe0043833dc9eb46f402ba6cb977749a8adc068261bfc7f34e4eefc2ad645aad4e6a7d1b4992bfe8872e8bae7f5041f3d2f0e673d42cbb73c8cdf511c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}