{
  "manageEntity": {
    "action": "Update",
    "entityId": "509819410",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf6d19fe771d9e39c3cb58febfa15090803d10a4183d419fc5169e75d5afc7183",
    "signature": "0x89397cd462f3ad1bb65aa6b0d09bb998267816d6bd3b6e8193aa3dd63cbdb3725800d241b5d8d0d6333885a616bb363f3aceded20f63c0685d79cb9627d2d7581c",
    "signer": "0x792632D35Fca4cc5abA0bc6B33a3F6729b4ACf3D",
    "userId": "509819410"
  }
}