{
  "manageEntity": {
    "action": "Update",
    "entityId": "745392701",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd6819909be54254663bfbb1794982fe5fdf2d9265adda531b9748ddd8d999730",
    "signature": "0x7cfb1ddf80c48cef14b607f6c3c6aea5c0ff0943c31cd7a80227b0e7e3cfa82627f9aad574e9cf71f75efd4b4de381adc59d6d67c17e72a428e8990df51576be1c",
    "signer": "0xBf31D832CcAB3e36e219834170e72821d15c8C14",
    "userId": "745392701"
  }
}