{
  "manageEntity": {
    "action": "Update",
    "entityId": "152746608",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0aa8cb4908b13febc0f3adb597da9adfe3a8444634d6433de5065d89c9ff94df",
    "signature": "0xffe966edf45ce41fa1ff4ec753a4e868ce51a98622222c4df741f442fefd1de0445b03e90bc18faf703469f62de3ee1ca4fd84b8cd37731f66245a5fcc67f9021b",
    "signer": "0x141Aa811b9C24fAB768B4D3Bd4440c6502F16b64",
    "userId": "152746608"
  }
}