{
  "manageEntity": {
    "action": "Save",
    "entityId": "285951",
    "entityType": "Track",
    "nonce": "0x1540a0f4a4211f7eb00267adc8b12df061f22f3e7ef72197e230039b6df2b8c8",
    "signature": "0x75c2ebd49529e7552e6c09aafef93828e1e03d6f0061f77de87a56b305cba1641dbdf416178aa20aae878f13f1d96107a400813e6ad6a44ec32db220b92d284f1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}