{
  "manageEntity": {
    "action": "Update",
    "entityId": "518758857",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe22b23748fbd2902f960148cf32b267194927a5da65ba87df4ca59b95c7d7fe6",
    "signature": "0x7a4d8a7a2c2acb71e9ffbac734a0534310f5db6f6375e8d34f96edc5bc9a1baf0e1556d1a26453affe4e7a50273d82a9afb83198d1206a5fee3fc1559d7753761c",
    "signer": "0xADF54C2e8AeE384a9540e524eDCAd6621F64612D",
    "userId": "518758857"
  }
}