{
  "manageEntity": {
    "action": "Update",
    "entityId": "548199821",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1d9ed2f2b824fbae81dc324be7effc9673bfce6a488361435b6a433ed18e0d32",
    "signature": "0xa344a1b9d704011041286368214c2b8ad4870cc98b8caf9942b0d60bb3847e037df29955d31dbe26e43d33d04b4cab0f1481bcfae0843e0c4923d425b38f50b41b",
    "signer": "0x33545d8F2f5CDF9ddB7F06ccE62892E17c56CEcb",
    "userId": "548199821"
  }
}