{
  "manageEntity": {
    "action": "Update",
    "entityId": "662476209",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x60a9afb11b8b66af6fcea1850a2d3c6e6ad8b16e62e914a80a152bf72eb2855d",
    "signature": "0xb97644f42453369b6fadb9f9d756cd9e38f6f859bc6bed5a42bf8f45b9af71da3a5dd2d22eb990a3f4ae6ec9e6760b8c9bc32b2dd38a97403ca08c285889bd981b",
    "signer": "0x291e828e2a8d90cFE086D55C396029473A471377",
    "userId": "662476209"
  }
}