{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3d1bd7960234e8cd63eba28dad4d5ad29ef58c84af4a3a17c3fde6f8766e60bd",
    "signature": "0x76bcd32dcece684701f30ad95833d469b8a27091720f0f2cbd25a375d48555cf2a837626443b7ae21f5fa9637b20f42283d9b963788d6ab2510def82b7a6b6ed1b",
    "signer": "0xDAf6ce9eae7dCC6EA6FCD5C725a86Cdf50784956",
    "userId": "881028422"
  }
}