{
  "manageEntity": {
    "action": "Save",
    "entityId": "1106566",
    "entityType": "Track",
    "nonce": "0x402fe7bed3f3c73c0ebf47ae2861e7265e5b01739b1d3f302f35e741c79b0227",
    "signature": "0xfc2d03719d52dc171a155071c67d3d2b4b2bd94496e08f8aa1699daf1c2943f07009d409e50d561b37e1dd8d34b44bde7136ea0710c14b15348d35898b70fd7f1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}