{
  "manageEntity": {
    "action": "Save",
    "entityId": "1937303458",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xdd13c3892bb63f34f125e10475924c3e55273202ef21a5146eb28ac32bf89975",
    "signature": "0x91ae4cebd3714e463d9ceeac46cf338533d94f24a19bad9f574a646c948d77a14f2f36de56d48e67bec181dafff017b6a21a4e0ff6df73826f3c7d58da5068fb1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}