{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "300078",
    "entityType": "User",
    "nonce": "0x6959263d1f8b1a3e0e7f96a328a3c550dea50f7bf6abee5d60ca1db5b77c44f7",
    "signature": "0xb06e32fc65877a2e847c2bb6d7c92d2ee0852983e850bdc1fe71d2886df62a840f4371aa87a27b5c7956fae67e4b67957a3ed6b1804444a03e996cedaf2ba56a1c",
    "signer": "0x9c3860443A17b3326308E6E90E9cA7835460e0b0",
    "userId": "898210232"
  }
}