{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "571117272",
    "entityType": "User",
    "nonce": "0x4425c36b334f535c34e7764ba77bb10c94bb321b640f87e20ad28f6a66665eb4",
    "signature": "0xad8ba99c215604f453f19a86d3075a8731838da56d11aa2c35c320906e1411864abd973a33dd8e7e12a1f095cf35fcd62e795c1cccc36863dcb21742f5184c7d1c",
    "signer": "0x21370B7a703524cC2941323C2c960224021F8D56",
    "userId": "986168993"
  }
}