{
  "manageEntity": {
    "action": "Update",
    "entityId": "223753097",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa96bfac3c3c385f1c93d4bff31e49c5b582805db8ace71b692f32b79f06235f3",
    "signature": "0xd746428892b5e5446220b83f3aca7d44a21b73ab7ca2b65f9600064bb3083a8a6f74c3c48afcf0c0edefb69cdce75a46d07a2105c1992a761b78ac8af0b3b42c1b",
    "signer": "0x767f310d8F3fa0B81CCb11420077870b82f7c09D",
    "userId": "223753097"
  }
}