{
  "manageEntity": {
    "action": "Save",
    "entityId": "9873",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x423d5492c814255132420834c1ea52f2df0c369149d362122b28a0d3df407f04",
    "signature": "0xaf2cd31352cd0c35630703dfb78b94a92b547d46533ccb4710ce68df3eede8cf4099120f7123b4225445fcaf8d515fd6c17c478f478bd4fe42ae70d3b9b250221c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}