{
  "manageEntity": {
    "action": "Save",
    "entityId": "80354",
    "entityType": "Track",
    "nonce": "0x875472ce59fe55ff3fabe7fa6507473617af0f201a92ffbf898a35ff57b8d7bc",
    "signature": "0xf2fc45285c0cfb65086bd508618bc58a8d1ff819461efea0d0e82f5d5b5ca2800f679a812821ab47391bb5b79cb16f8d6055292ab170fd5390d54d0c7420e9f71c",
    "signer": "0x0a5148A3f132E6696c1Cd3FDA8465fC5fF17d3D2",
    "userId": "803288761"
  }
}