{
  "manageEntity": {
    "action": "Update",
    "entityId": "224201098",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x21f20554e5e79fdf360c043042415f3ac7cf0ccfa3c4610d85aa881e60902aba",
    "signature": "0xd8c82fde6a003a5ed0ab3fb0f01cdb1c608dd56390604a20bc387a7de6b0fe216b159a80a072907b6c864b94ed475f235884b1fbb8a45e425cd84f52214afb6a1c",
    "signer": "0x66F5a69fF2367fbB75Ad87374c17e3299C02Ee22",
    "userId": "224201098"
  }
}