{
  "manageEntity": {
    "action": "Update",
    "entityId": "227030129",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf4af2e449ad7931e9cb094fdc6310ae123a37bacebaa3e92f86bf497acb16af1",
    "signature": "0x28b83850367b05230aa3f4360623375ddfbb75dd5cfbbb91e266b19462901f466642bf56a6f3828bd13c838a5ecc8574690f4af7cebb07eea28e1a89974bd5861b",
    "signer": "0x8F5412De2969476FE09564D746Bcce159b1e37b3",
    "userId": "227030129"
  }
}