{
  "manageEntity": {
    "action": "Save",
    "entityId": "1104270",
    "entityType": "Track",
    "nonce": "0x97a97827f839119786d242fdd06cbff8b4967fff82bbc0a8d719b7954214ec51",
    "signature": "0xf9c004afe3ab7910e03711981ffecc6698912e9258c18fa9b06b59be6b29d820437c55816d1f684145e42b799d58c5c724ee8e5344982ff3860eafb1e85a6dc71c",
    "signer": "0xd648B38B61b65e4F8df57D4EE65560D8DaacFDb2",
    "userId": "277314120"
  }
}