{
  "manageEntity": {
    "action": "Update",
    "entityId": "401235853",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xebaaeedf53bd85f25d26d3870240a2ba6fb85616568ab86f7f480bce199d1f24",
    "signature": "0x696650c3c62bd1f7b202fee26716fc5297dd914502921e311ba114b470bf14d241507ae3959c45ffd390b91caf671ae3cd3d89c73effa9ed0f750421b2a4cce11c",
    "signer": "0xC982f8B52eee7F9710Edeb184eA0a7401A3C79fC",
    "userId": "401235853"
  }
}