{
  "manageEntity": {
    "action": "Update",
    "entityId": "643542255",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbf6ef3bcf8d8c746ebf6d61b8139c9b6f51482e4d2f3dd8bd2a0322d673c2f87",
    "signature": "0xa1df91b8ad025d7a589124085026227bd4f0a31bcd6963369ee4682776f0217c7ed19f2316ee798d171d5c8839e5af81823f251cc7b087466445cb0791427ed21b",
    "signer": "0x62c5f26C360539EAB59c1a6AAAcD930200D11Ef9",
    "userId": "643542255"
  }
}