{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "108997",
    "entityType": "User",
    "nonce": "0x0a1f0781c168d97985abf5f4f9e6884713725101d7e7eddc66710b8de8199f2f",
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    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}