{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "311591173",
    "entityType": "User",
    "nonce": "0xec57e762db74080914a4bb18f1c13ae90b3a16eb64a69016f90b2b67825c59ee",
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    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}