{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x076026185e1105655143facb963ec7fe7040b9ceef2407191d3f2dc6df8a4174",
    "signature": "0xb8574c88b82d5a263390ec165c18f0a3ad8677c4fc36b9f2db2fb8677b47dcf433796a0102bedd46eb0f7ac84e61d8a295fa234f34f5f5dbefd05b9e0b2907861c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}