{
  "manageEntity": {
    "action": "Update",
    "entityId": "873254749",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5d8013c57b8a27c26b4f09cad9b610926e9313cd479d454ae02f58d4a63b93d8",
    "signature": "0x75a312523a4ccac4803f4846930ae9f4f44157799f999b4970c85954c320642d650258805b2046e4cd9a778e5787d695471eaaa3a48594d701b8ff7662b149591b",
    "signer": "0xa11ed4b4EC56ecd7AbcCeCC2E4902590eFe35bcf",
    "userId": "873254749"
  }
}