{
  "manageEntity": {
    "action": "Update",
    "entityId": "559649104",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieram7bvig6ncimuydyoxpovxl6g42emnpzgashdgd3emqunw77rhd3a\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":458246634}]}}}",
    "nonce": "0x78f3bcff5a800c7cdb1fe7f8164b5f34a784a6d6b45a163352354c37be1cdc9e",
    "signature": "0x0f70bd074a9a7053a722eab5cbaf74a4088e3c6ed642c046f2d4e029dbb645e6162044f3177c36bc84ed564ea08c39a04ea3be04c8304d469cc2324c560d801b1b",
    "signer": "0x8cc4a91eB50c096A4b37642DC499829Fd24fB20D",
    "userId": "559649104"
  }
}