{
  "manageEntity": {
    "action": "Update",
    "entityId": "123310130",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc85a3b429b4e2f9658ed6bbdfccda257cf5f69549df6ef0e3a56eaad46883df3",
    "signature": "0xe6b0bfe804f38008a63ba61b70dc3c42924e31cabc7fc3628192e4e91265cb0332b58ed5e44e531febd698234720cabde46c7eb82231374d72542775fdc01fc71b",
    "signer": "0xf08513Bb21090bdba355dB97BDA9A103eb6AD412",
    "userId": "123310130"
  }
}