{
  "manageEntity": {
    "action": "Save",
    "entityId": "1111243535",
    "entityType": "Track",
    "nonce": "0xd368982b15d3896f1fcca053ad8748164c5325c632646645210b2553489cb014",
    "signature": "0x1d3c93597d9ae5f8c9e567f51e11fc087ab1e406c2a14a39dab798e1b09171966b772074a86331dd354f6da17e0bf8f290b8af74fa2965f8d383bc2eeb2c27291b",
    "signer": "0x7b52e6AA15Db4Fc3A84AFF2b12e5B8B128eA8610",
    "userId": "808512351"
  }
}