{
  "manageEntity": {
    "action": "Save",
    "entityId": "188602829",
    "entityType": "Track",
    "nonce": "1782033432260995046",
    "signature": "0xf8c72e8afa72c64bc5eee23bf5f2e1e7c75925f29c87ff86f5fcc6c5953a178c02e56a26ded74856c4bf4b93f90d004082bf54f622d7da38c21811eed55298aa1c",
    "signer": "0x2cc593FC814461263d282A84286Fd4F72c79562e",
    "userId": "175201368"
  }
}