{
  "manageEntity": {
    "action": "Save",
    "entityId": "980060758",
    "entityType": "Track",
    "nonce": "0x2c6ace8e231870e282849635a189c39e31aa4be1522f8acca947afc9f2735b1a",
    "signature": "0x188611706d6dab2c326fb1dc0fb7fc2535e73e84dd9f33a0578add556606bb5832d5846b1b2b7992f9ed2fb5c3f84de61f6c7e4347ab50f3d689d4395ec877a61b",
    "signer": "0x484d8957F3f2AAC8A75b6c9769692fB7Bf806850",
    "userId": "413536646"
  }
}