{
  "manageEntity": {
    "action": "Save",
    "entityId": "1005781711",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x199b8b9d5e7cf9cb41c09fb4f895368a14e08808d25f2f2ee3048257699f5ea4",
    "signature": "0x52bbdc6e710f0468ea28c8a7422f8444631c52ff64b4b33c193085b9c64c8bf509cfadf102a1ea018949a3d817efd88997a502548a8a654883cb11d2483ca5b71b",
    "signer": "0xC56E1ccbA93c1E645e5F27Bf8A5ca13eB7A5eEbe",
    "userId": "335878078"
  }
}