{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xdcf5ffb3d50f5c5c9e720d5c57fb713cc1cf20ebded1230c80ee717666dc41f5",
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    "signer": "0x8cF7053DF6aB6d8Ba9d6eB6FfaC2e94e61bA0081",
    "userId": "786659341"
  }
}