{
  "manageEntity": {
    "action": "Save",
    "entityId": "1760534348",
    "entityType": "Track",
    "nonce": "0x8a438cf0f06f2e82b6e4054f00bcbd364aea4ff744cf72d5971f4877c249a9a9",
    "signature": "0x1b90bd0761d8bd3b424428ed5684289c4debfd3ffb6453434e50daa6f1599ec21949ea31f15114c8c5afb3543835486625e5f3728553aa6ab51e11f37511a6a51c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}