{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x4103ee324de4ad67e42e199b2d52bdb40f99d63e3a23466316a6f87e193616f7",
    "signature": "0x9e450dd0576c90f82eda116e2ff3374058db6c61bc3f1ad6225cdac945461147551807688baeb609eea86bc28b58de8ab684b0bb1650c076baa6cb97475095ee1b",
    "signer": "0xe083C6657964CDF8edDa4A2141B67047B9816C35",
    "userId": "861832117"
  }
}