{
  "manageEntity": {
    "action": "Save",
    "entityId": "1766892114",
    "entityType": "Track",
    "nonce": "0x8bbfaf5a6e7a6a7d1773ef9cc7a43eed72de878f055fa2f67687aed9aa07c172",
    "signature": "0x6dd04973be4222d1b3582c2bee8dde17f06b1fbc5603a62d6c9ea0d0841ebada0c95d279fb86a1ac2602d90c026f084b1161bfa72a6ee0e91d92b5d8c1159ae91c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}