{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "257465",
    "entityType": "User",
    "nonce": "0x00a3028dc27eaf12ebf32e9624b703c3cdba3b918d8d24ec627443a97589daf2",
    "signature": "0x4fa6e631b9916484bc7ac712d214ad60d86ab1887142b8c7b89ce6a27de78954575984b236351f7d49683201a699334d48b912a56319439e8c6cda2ca76f2ecf1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}