{
  "manageEntity": {
    "action": "Save",
    "entityId": "62036701",
    "entityType": "Track",
    "nonce": "0x23a481889178b3178084afc272fa1a0950d7f6edd7358da554bcfbeb646f62e4",
    "signature": "0x138f96bebdfe61f56d55f9f2e8817811c13d8de303d12750bcf829667a61a4097a1f147cb3101303831b507d9b3b1c80bfdf30d01aa077c32a602d4376b179f01c",
    "signer": "0x14d7618B82Da4e7176FDe32e4379943eCd69798D",
    "userId": "238125623"
  }
}