{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "129241",
    "entityType": "User",
    "nonce": "0xf3815a1c98bfde23403d0fe135471e2f91978177028b6e6fc8afb966f5df9787",
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    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}