{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9ed780ea3e42aecd92363614ff7b53672558270b167f34124d932c4bd2643e31",
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    "signer": "0x6bcbC4b3e44A7b98A80b637fE97a19075749d09F",
    "userId": "585544951"
  }
}