{
  "manageEntity": {
    "action": "Save",
    "entityId": "2092118135",
    "entityType": "Track",
    "nonce": "0x5c9ef867230ec59d9ef8b97993e8a668fa994f18634773b8ae461acdcf45efb1",
    "signature": "0xf85de2105e4ab98ef8b431a3ca7f106f9561811bbe484d7f093bc64f9fcc167a031aab6d3d2c1a716e8fd9970cab14fcf7cc89d6ecff8103e70c08901059b64a1b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}