{
  "manageEntity": {
    "action": "Save",
    "entityId": "95800694",
    "entityType": "Track",
    "nonce": "0x4aeafff2e1ceeeedf42236e02feb56ac3ca510558b795501b3186fa3736d035c",
    "signature": "0x70117b308615afbe79cbca78fae9992a7db45da283e748600743cdaa8a1cb9fc3afedd75f91a9e306592dc38741c36b3cfadbf348c950e0b2586bb6724cc53fe1c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}