{
  "manageEntity": {
    "action": "Save",
    "entityId": "1010662890",
    "entityType": "Track",
    "nonce": "0x7d82c6063f0effbcf63dfc94423497a8ff222deb44873318b837b2c09d07d214",
    "signature": "0xeb941fbac9540d4162aee34cecf8db883add5cd26f54c1e18f89d0f7b7f0284924821b6e57547508feca4a34102ee45b8e27eb0a66336eb5e46c80c6f4b88a3d1b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}