{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "463741311",
    "entityType": "User",
    "nonce": "0x9a9e29608491e7f8b7feee27633ab921386c2b51e22ab73c974a921b8e026da5",
    "signature": "0x9633103cb6d65a6302ac4491a90c6adf27ffc1eda714e1a47c887941bc1dbedc069a7f4be032870a0c9010fc0cadef557449c25ed56e17e8e2e56790313521c91b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}