{
  "manageEntity": {
    "action": "Update",
    "entityId": "10918171",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4819e73ec33bf5ad293742349f91ce62b882b8f079146389b1de238e976e060c",
    "signature": "0x607770d40779039ed1a026861e7f42a92a9764e5246a2cfbbb857995bbf10efc54288059f454d5873473e9d981b01571dbb5067af20ced58fdde9173f0b7f7121c",
    "signer": "0x9682258CEf37C319c38a2e35C3B3B340B71a704c",
    "userId": "10918171"
  }
}