{
  "manageEntity": {
    "action": "Save",
    "entityId": "143442952",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb7605986c50ecc806c374a91461bb057a2da61618574a7f8da984a5f9057aa6a",
    "signature": "0x69edadfdbc144cfbee8844baab6bcd5ae4cbeec42d064e416cc14c21fe3b48ec0bea7b71a2cc322d3304b81eb613b99c78f0cd40588c79802770a36ce6633fed1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}