{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "203774",
    "entityType": "User",
    "nonce": "0xf674b92495c0d739101e13185d72efd22e29453d0e270cd539fdb94db26b2ea6",
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    "signer": "0xe23f94433EED8958AAF9868141BA976B8fffb969",
    "userId": "307915745"
  }
}