{
  "manageEntity": {
    "action": "Save",
    "entityId": "1619802161",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x75df5ec5a9c3d24b6ac51f92d27eca462cb83f62065fd77ff59994252ff74bf2",
    "signature": "0x696513b1ea77c2aa1c99f58b6bcb66589ee0ce1a4d1b8bd91d2db6bc919c799348654c694d7e0b644e75a49d0ef4bd0b16f308fd5a64940777a8252f9c7a98fc1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}