{
  "manageEntity": {
    "action": "Save",
    "entityId": "109951726",
    "entityType": "Track",
    "nonce": "0x2e13e4a7bc678cc40b33d3a3fad722c30bf570a5e8261aa0882d1364104bd509",
    "signature": "0x214076c64ca3cf7eec2b7b686075e689a250d505a38730ffea7232415d9b888f654631f0b776977e5ccc8967b6471930b862e938e30242b34b98d4122126833c1b",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}