{
  "manageEntity": {
    "action": "Update",
    "entityId": "663406710",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbc74f33ff1337a31f553c315af9e39c3d038b2a25936e26005f18f973169b147",
    "signature": "0xb7db1142d34de876f4a53ad209773ceccba20f7e827272d4c100f9bf47fa598b29076acf0fb06db641c41864a74c337a186d1d528f20ae4bce3ac425a8fb2a381b",
    "signer": "0x2d956609Cbe7D7e504Bd6319d4abC4E35de2dcF3",
    "userId": "663406710"
  }
}