{
  "manageEntity": {
    "action": "Save",
    "entityId": "262005246",
    "entityType": "Track",
    "nonce": "0x84b5b27b2199ca10bc6ed40e552afa0314ce25073ad12affbdc5448f220395bf",
    "signature": "0xa34eee54e954c75611f0020ff96a94162b56f1cb77e0d82291aca181e70ebb5f0ee5393feae7e66fdaf95d830285ecf1c81643b0bbbd9da5f9a1d25a04f71f341c",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}