{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x32995b60d888b79a5a031203aa129d7b0585ebb516a65bc81d8a418af67a094b",
    "signature": "0x1e53ccd08a1e2aacee2c2f3f4ec38219a3bc5c40a626400cb179369e15638a5419fdc686811b8cc23bc924b2b2b07b04d8c0e2bf35396b68f98431136eefd5ca1c",
    "signer": "0xba188b067cBfed364c4d7A1896F1b511a22e246f",
    "userId": "775575884"
  }
}