{
  "manageEntity": {
    "action": "Update",
    "entityId": "539020337",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7qyja6v6jk544qxuauzizbpmnccd5ty6x544kekbpja36tpvpn7q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":366802839},{\"type\":\"playlist\",\"playlist_id\":1297150839}]}}}",
    "nonce": "0xc1b2fa36a8cbb08b1f2abf61e0f029d1a8257c8aff4177b0586e39d5c377e942",
    "signature": "0xfc05652170c7e7e5ddd1bd4b105e3b65214b14592f1606252c412b31110f89931fd2f773565288fdaccc8b21db3d0c89d42fd0808f130c76321656e3f5e81bb41c",
    "signer": "0xB0A52EC29a91B6D9D3A4845CD4CcdcE0321CEF1C",
    "userId": "539020337"
  }
}