{
  "manageEntity": {
    "action": "Update",
    "entityId": "448020710",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x181c974d57f4667da3b3ccaf24fadf7e1baa0c77691c80d432284dfd04a3c35f",
    "signature": "0xc14d0724be2081bb1374e2df914a8c84fe039afe3965ece44fc88d14f8aa87f16d0459c6bd1b32b5e05f96e3f46d3329d1e240d4d0a0513343eaa339cb5afce51c",
    "signer": "0x5EE0eC5017e766894D4B629B450961387F709BD5",
    "userId": "448020710"
  }
}