{
  "manageEntity": {
    "action": "Update",
    "entityId": "547925274",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x62807abbb2c70088a1670c49f5a1e4f2795b449d492a56040600fce560346153",
    "signature": "0x9e55b90cedd91497d74a3cd1efc5363f6f20c89ea64cf0fa52a6f2aaf20208d805dfec24cb9e9ffef75a82457243d33a5e7709b7ff594d71a630250cc19a0ae81b",
    "signer": "0x129cD5f15608Aa6d10d553f85023e9f6f6f30d9c",
    "userId": "547925274"
  }
}