{
  "manageEntity": {
    "action": "Save",
    "entityId": "1269453276",
    "entityType": "Track",
    "nonce": "0x627bf60053612852ab92f39fec57d44d024f99693b4c5bd3d5f57141c5929036",
    "signature": "0x49aeeb32f2d47af0de1b246ce227045aa791e15e7982efffe80090cd322e411575b9fe6f28e9ea5c96a8c8c999f85b9c999cad7878c9f493d499ae167b0a2f691b",
    "signer": "0x7ceA71B4A8C4013A4f57c1A57eC0430915572e86",
    "userId": "31724295"
  }
}