{
  "manageEntity": {
    "action": "Save",
    "entityId": "857197230",
    "entityType": "Track",
    "nonce": "0xc886d07e03c76ccb6df0840c17f966f9cdae28ca8e9e01750d01d222eb985bab",
    "signature": "0x2a534f38aa8aabac815b19ddbe6642221cb9d2ca1ce6402856783232e1e6bd170f0183d763fa661725a87d35e221c581e96be786622b2319234e9c87fc4db08a1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}