{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfbd279f0a1c5e52d34ad714545a8321f62ebc213b08fe5a335c5b7b2763b2855",
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    "signer": "0xC09D15d8aF1166773888838DdB3399C7Ac0808e2",
    "userId": "108662596"
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}