{
  "manageEntity": {
    "action": "Save",
    "entityId": "1015982297",
    "entityType": "Track",
    "nonce": "0x142ddc3249c281c0b94eef0ad0b6fc867a3530af3a13ef31d911f06f2f646768",
    "signature": "0xc7704c1ea02dc87467d09a7b56a825645ba4884c6a38e185bd9fc552609b408d3164283b8d87eb3becf7f736c1859ce0c87825547a42ed50ebf316c067b1f6df1c",
    "signer": "0xec604c1E0A445F968bCe0d0BaCdBE0530744f686",
    "userId": "14995088"
  }
}