{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x69f3586aeaaf3824309c61f001bc726c0d4b7072e20f83b0d95178a3b263b63b",
    "signature": "0x54ebfb2df51128a11b4922b4116f4de6510779589ca3cb04ba38de42e2026b4c5b9f49b571790f36e3ffa45c28a563941ec4ab3a7d2bbc896eb65f23bf8a4c401c",
    "signer": "0xC75a276D0a36850045510B0483E737bCDd1F5E9b",
    "userId": "588125677"
  }
}