{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x83dc3d9e6375364405c2c71f5ca0a0875d362a3377456f131933eec2a4ecc304",
    "signature": "0xd15863e71e14019d54dd3793f1dc9dc88113e0b44fa7f1686936901e5953ce210bfe16523b0848370c3fccd1b6f35bd73a32dc61369d0520bd91c62ffadfa1d51c",
    "signer": "0x9cA09F22Cb015Db5Ba571d1C6654541DFeDd80E5",
    "userId": "530745737"
  }
}