{
  "manageEntity": {
    "action": "Save",
    "entityId": "1832395903",
    "entityType": "Track",
    "nonce": "0x28ed53aa6196fc3ce75d74ec840b35460af09dcf19a38927673fa9d5fdd511ba",
    "signature": "0x296ba44e3d4ff321eac8fa4ce78b32a1ee733ff8942aefde69399558971de0537a6b777b33f2d62d1b1dd732e926080203d71c32f57c247e9814684116d50af71b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}