{
  "manageEntity": {
    "action": "Update",
    "entityId": "418944733",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4f627c7221821471174ebc7c3b879da2f7d3e56f1e78b8caa939e9ea3d08464b",
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    "signer": "0xF1456b30840C721fc4322204aa29F8Ec855AbC4b",
    "userId": "418944733"
  }
}