{
  "manageEntity": {
    "action": "Update",
    "entityId": "339034760",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3461748b388c00974964b253f1f98f54b15ab48cd0667903c50514574b7eca9f",
    "signature": "0x8cb03791650f8a2a414a2000c92ec8f50b9ad2c602ef6c319c0ceedf892ec02d6c31df84ecd3a7703b0f4451a1a5a60847f7846ba723e3bf55e8812982d962351b",
    "signer": "0x8E527526b8D197B0e89F101f38e313902fBFa7f2",
    "userId": "339034760"
  }
}