{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0x3ce0b3c7ce92c275768b828b357db4f7a63eee77a7d8b8d6e2b2863fa14d47c8",
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    "signer": "0x2B55aCd5bD82288aA03B582D71F4859c9748e5F0",
    "userId": "832437194"
  }
}