{
  "manageEntity": {
    "action": "Save",
    "entityId": "1808068181",
    "entityType": "Track",
    "nonce": "0x29cf8230f21004df1faaed71269d452fca45069cde46d2b5629222d8003faa54",
    "signature": "0x1e9757a3b886a1bb4a07d1a0ab8be93aec5b9f3233fd136b766338fcbd98c5525351b86c4da9bb71cb429a50f7e9e05265e7bfa19c731b8f83b088e1157f2b251c",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}