{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x50d8037ecc013085b0034ddd76b72c37233faf9f1f83838a01dcb472427ec50a",
    "signature": "0x4201c321db5eff171cd0df71c3e15eb7e909f80dee705ed9b71b884f0dfbfac22a61ea48fe43d9949449a62c9d717888ed88c75271f2a78cd888d7ce3b33d0441b",
    "signer": "0x0A2F5D4CD50BFc8fcee7d40dFDCfBf866422FfaC",
    "userId": "675013541"
  }
}