{
  "manageEntity": {
    "action": "Update",
    "entityId": "393021518",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0b6f8e777934db0f3a5d6ed7ba31f733c3b285da5cf79b13eaf16f913432d990",
    "signature": "0x9c43c851ed251679fd1d71270954e15a731debad90537d5efe976c6a4f42d7960fa7af2e68b4cd1f8f4036b306540d6438817d385625cf517bc6da7ec0a922f41b",
    "signer": "0x2cfBA45e5063d6aCD9f26Cf21490FA2e7e45fb54",
    "userId": "393021518"
  }
}