{
  "manageEntity": {
    "action": "Save",
    "entityId": "426056",
    "entityType": "Track",
    "nonce": "0xdbd609a5158c7b1c161e962c86833db75c2bce3564c6b9a710d38eef0eeb09a5",
    "signature": "0x795bfd9b81d39e4a2e320cd812ac31f944f5cebf06407dffe6e09cb6221e8dcf18b855b392f6c5ff7f4c81fe66237f00f99b448dad1c653acf50949c5ce691201c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}