{
  "manageEntity": {
    "action": "Update",
    "entityId": "411758839",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x02c7c8e8f00cf553ec91c1ab49ee0a79078a2ccfe7cf113b880ef70365ed718f",
    "signature": "0x5e4a2bb7a09dcb3e5b770807fed4a990e42ace9e81db3ac917f3f4a80dad47fe7e351a7bf0a2198b2c5ea1e6a2cfc5f744a8608a8c872339bff8ff3a336324bc1c",
    "signer": "0x7E3517dfB0133A2d80F1b5ef5A8956Fc415A8D5B",
    "userId": "411758839"
  }
}