{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6148",
    "entityType": "User",
    "nonce": "0xe3e6c4f4ddb00deb0928da0480be92adefa26d3026140f4e2f22e149a4735c21",
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    "signer": "0xB5f484B2572C82B0a09b05912803Fd6151d3B78c",
    "userId": "205408122"
  }
}