{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "879754759",
    "entityType": "User",
    "nonce": "0xb37b206b0339b975c2ff8448888cd22eeaf9d3ffc6256948b076f1651c954ff3",
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    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
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}