{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3718",
    "entityType": "User",
    "nonce": "0xfca1c0ab81df68f80fbd7a48aa4768428bc46d97a771e8a3caace454de6747e0",
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    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
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}