{
  "manageEntity": {
    "action": "Save",
    "entityId": "2130690207",
    "entityType": "Track",
    "nonce": "0x3e2772df0a1bf015994510a7a0e8db4c715287e7999dd8c1fbba659b39ac799d",
    "signature": "0x0b092234d59c785b4754b5dfe1fd907a2d121efd458e235a628295180599cb36368f33d978ce6eff8ff6a1b0874e5f8821f0443a8cb0a9f22380b4ddb16c42591c",
    "signer": "0x2ACda02e37Db2DC08f82aEFAB268F0610974bb3c",
    "userId": "416239376"
  }
}