{
  "manageEntity": {
    "action": "Update",
    "entityId": "445246220",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd393780c3f368744ef75e317a7feb75a78c5fc939f87f32ac5372312d02e8139",
    "signature": "0x1062fd310b5acff3ade944a8b53020f43491b135c5d3229bd89ffce649ea804771508f5b6a2c82439b735df8ecce3b85d404c5fd70bde4709004e9bb1b1270481c",
    "signer": "0xCdFab7D841D80a29A82E77DDb44327B7Ec8C3081",
    "userId": "445246220"
  }
}