{
  "manageEntity": {
    "action": "Save",
    "entityId": "1745179013",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x0af3f4c0fccbe7f464c1f83615246cc6142763a4ed8fdb0e6c8163d7f24bbc39",
    "signature": "0x7d172ab0c715a8668d2b0784a087eddf1d8ea9a31725aa7c293f5ec262c745ea5fece532ae4cc70de622ea732226cf16847c2b1819921055bd684dfbf5c06a461c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}