{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1323567",
    "entityType": "User",
    "nonce": "0x99e16b47a25907c87e6de23f8d40705efdc62b6e1c283c1063600ded0024c1e3",
    "signature": "0x257dff097ffadcd90d7ce769c65fc1c8ed03e0058405286c0ce9ccece46bb4ed6abca97591bde56d60c4bbb2f660c051ed6ec868b666862248d83b60e5d8b9741b",
    "signer": "0x6B239e9B75f27b519de7Bad3a26a0b7d30e32D3f",
    "userId": "311257477"
  }
}