{
  "manageEntity": {
    "action": "Update",
    "entityId": "100733685",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x122c10e362a471d8e28678ad19cec112b5fb12fd50912264bf519ff4f2f63197",
    "signature": "0xfc4c5f07716868057d26e28c3980993eff4d7a5d664af85412c30f717a68d7397e8a738889a20f15981979e9685cb7d76fcaaab53cf3134d8d6b284b4d406c651b",
    "signer": "0x546690a449F7c233e1d182fAEa6cAd5d6f5C4223",
    "userId": "100733685"
  }
}