{
  "manageEntity": {
    "action": "Save",
    "entityId": "1399510076",
    "entityType": "Track",
    "nonce": "0xe6021c325bed396d6c34bde3a01eefa9d3f5658b6bfa797e8999b31beb91fb10",
    "signature": "0xf6515f08bfd949fa24d2d7cbc91b9558745ef66db81698f335ee9725d2a6240d240d8f36a5e32f749f38b42cce4f23067d83e9b4646e068e60fc17d0fa1179731c",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}