{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x72249aa770a20a8d82f021992356e7f84c430c87ffe949f3875d99f7a65c579a",
    "signature": "0x92fe83a1acae9e323acd11c3046b9225a97d4049cff094dd72be58949dee91ce196b4ca5a28728afb6be4b21ad95f5433fa78c38cc09963c5d9e631e8f08daed1c",
    "signer": "0x1F687f4cF65B79aA3Cd13010c8B90C4eab460A5f",
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  }
}