{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0x557318fa952d02005f3fa8b2ae40ed88d1f66ff87a038a7733a7f1a9523d3dc4",
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    "signer": "0x1c3d43E37d15C27188109Dff59Ba48dbB0f1d62f",
    "userId": "457855099"
  }
}