{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5cbb1b961a133ed5ec6f71ffaefeed37c491296da6eafb5b41dd2b34ef70f3db",
    "signature": "0x0ce2c33578915aa30fae4ead2ccfd2d11b0e2d3310b51edc72b0760b24b73b8451f4f13a46453ef76292e8af1c69a751a51a613fb37d5202ad602b6b35cb602c1c",
    "signer": "0x094AA17013B3eA1cf264A62D2424982Ce42cdff6",
    "userId": "957000638"
  }
}