{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "152450",
    "entityType": "User",
    "nonce": "0x0667bac1ec0543b544d9338249b07802e78eb30e4ba22a642c1f9a306481a711",
    "signature": "0x4f7f7822d3c1a510316279c28073f9a8dbeece6ab0374965f5fa163395ec38b41a9af6dea90368263f31a3059259f9d24a8f43446d229ac18a6480be7d0bdc191b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}