{
  "manageEntity": {
    "action": "Update",
    "entityId": "331018771",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x85082281123b7f92b6ec45256001388f307b20448b408f483f6f139709946c03",
    "signature": "0x4bd2b27b4f6135e09232d50ad5cefbacb53fcec2fd6b0f110326720a2183282b7c03dce205e9cbf3638cb01e7633395ff8b1022faa9a85fc3f852858d43b5c1a1b",
    "signer": "0x81bAC68D47d9Cf2CC6cd77e5Ec80911be81af23B",
    "userId": "331018771"
  }
}