{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "213759",
    "entityType": "User",
    "nonce": "0x979035d87fef98a6e9bd5989a285f9b3032da8f71997b27457f5076125607f08",
    "signature": "0x8e9ccf369d8653a36c54587f17230c4d01adaa29ec8baa638171c66d443a738c4e61d2c8c485995d0546ea43ee9d4dfa987f9afc915825eb3116dac8ec5b828f1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}