{
  "manageEntity": {
    "action": "Save",
    "entityId": "852737190",
    "entityType": "Track",
    "nonce": "0xd26e264c385b23541561f08889cac859f861c1055083ca424e8bbd0de9d58f0e",
    "signature": "0x1155afc28bfa53cc5ba294f393c39fa3eb7263789a12a49b3fc3be5ccaee6d48576db91e2f3aa520e50fc440c5f3bd3cd8ebd0f91ccbff56c79cda5db428a3621b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}