{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2943",
    "entityType": "User",
    "nonce": "0x5ecfd8002aa6d26af194a993138d1e6421dec895a152d92f8e09ebd5741d7dd6",
    "signature": "0x8aee05bea7887e2451585c4518bea4717d6268cc9149aee6c243dcb3472ec8667a056ed6de9fdbe1e367daae59ed6a3a0a52867259f71e0539c338ace9f29d101c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}