{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "139804",
    "entityType": "User",
    "nonce": "0xf20d10ca451abebeec22c1109ac20c21f13e0559cdc0dc4655a0af0d5e21eef4",
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    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}