{
  "manageEntity": {
    "action": "Save",
    "entityId": "240594025",
    "entityType": "Track",
    "nonce": "0x0442fdced68ebc55c26c2248796ac8c94cb4e9cd423dc432cd5255df5d5cd467",
    "signature": "0x2edb5bff8f161db1fd14b8e41ded19d344aa08007937e506091f339ea9bee57d08b07c68c2f482710230eac4fcf7975876cff0149c11649f46d610b15bc31a141c",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}