{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1657869",
    "entityType": "User",
    "nonce": "0xbdc0f21118c73a6cb639c640db8fececf0b6267fcc604f668b62a7d25c3c9afb",
    "signature": "0x7c33698746122ffac799261efcc1f65e9ff6ecd6ea2369b21223dcbf783c14ad1da41504fcf1c0346bd285c33252c5fafbd2e4d57bbade02eb37f4e80e11f4601c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}