{
  "manageEntity": {
    "action": "Save",
    "entityId": "1332090122",
    "entityType": "Track",
    "nonce": "0x3a22ed215013c06b264981cfb8a80a057be58a59e8eeafbe1f2528ba9a43f562",
    "signature": "0x2b88a9b6d6dbc7fc5af18f9c815ee0d9e1c81c55b4cda42a0fa93e1f80cac3c62f3dff1fd45705e8d8481f87bcc045cd3f5ac403b2a83b21c2818f998ecd2dfe1c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}