{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "172347604",
    "entityType": "User",
    "nonce": "0x3a9fc14343c50251b8d6fa09d8cf89309d9d16f80d73d680ccf4616a9efac302",
    "signature": "0xa3788b33166d42d4fffb7513b33167bf8566938999490d6f8de4af05c3790df002ac51d60d116e630f1ccf7fe265c2f1b158725bbbd5d36ec1cc75d52cb631e21c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}