{
  "manageEntity": {
    "action": "Save",
    "entityId": "2049692270",
    "entityType": "Track",
    "nonce": "0xcbcfa45e99bf7b8b967ab5299bae89654e0d43670f146d7e2220fa5617a2e760",
    "signature": "0x7dad386e58bad3ffc499bbefc6493f0ead8228d0426632b5bce16e4e9e3120b02a2c3ab5b7ce2b7de27486ce921c25bc42492dd899a8e433481645cf6586726a1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}