{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdb6e197d2e367b594d2353b5e2bdffe156b2e5bd8a3367fa0041eee8f3f29522",
    "signature": "0xa915e682b013fe23a7b58c3f4dacbc7ce47af2460786e9b0aff0b9400854cbb337e24013111d43870cd84dace02a0c67df0037075c2a21a1eeca5bb76c740f921b",
    "signer": "0xc01E15e34E41e38124ef8fB45B720120b80f4940",
    "userId": "399833989"
  }
}