{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "144393606",
    "entityType": "User",
    "nonce": "0x54a2183a920d820773d9a83bb15cd1901dc15fb6660c28287344710662f54923",
    "signature": "0x81ad46fae00f0395799b90fc661215ccbb8e4ef95e9306df219a29f952d4ea0815694327e2593f8497cbfa1303befcf62bde1a6b24b99db9583a1d0ebe9e7f861c",
    "signer": "0xe270C91f9476B885124d6c0208211213dC10036a",
    "userId": "94825285"
  }
}