{
  "manageEntity": {
    "action": "Save",
    "entityId": "8997",
    "entityType": "Track",
    "nonce": "0x24d813b2e030986f842ecb6d433947d24fbd7a9f6dd762a2fd1e8de0a060aa9d",
    "signature": "0xac65a2b1a04f33d80577db6743a208c5992c1681a6f8960f7dcde5e8b028c2a050d77d2947cbabece48cb06387baf9e4076ad02e51af22ae5dc06e6874a10ace1c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}