{
  "manageEntity": {
    "action": "Save",
    "entityId": "656324",
    "entityType": "Track",
    "nonce": "0x956575e03c0ac7ac22f40a7f6e6d59229ff000dc18a55a5ee0b227f059754ee8",
    "signature": "0x08e448b43098c40ddc15f95c1ff000724000446502f72827c9bf77a6d64cd6e7698e87925d57eb71208f3355b435f1e50d60760b9c27e1fddf03825483a1984d1b",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}