{
  "manageEntity": {
    "action": "Save",
    "entityId": "2080911149",
    "entityType": "Track",
    "nonce": "0xa959b3561018cb1b87de4ba237b16125524ed4f2928f85c817dae61fa06fcb58",
    "signature": "0x1a1692144fe4e6505017709538d66c4d785a4d12b5cd88f3fa61aa1d5ba89d641f914b3170005c179f12a01612824bcedeca5221014ff20a8bcf03cddf0559c61b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}