{
  "manageEntity": {
    "action": "Save",
    "entityId": "162625454",
    "entityType": "Track",
    "nonce": "0x4eff7032fd9c9f37046e2bfb5a66146f492a512a954c58e626fe06e8d5f10599",
    "signature": "0x07a8fcf20a8efdb0228e0565d0872b855766509d5bf03e621d3dc88a0f5e7f590f118b758d6319b8ebf740789e27abe8a65379a3a72852f79d933a3da9aae2d31c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}