{
  "manageEntity": {
    "action": "Save",
    "entityId": "261099",
    "entityType": "Track",
    "nonce": "0xaa86a0c410480d8cf27a5f56bfbe371291f5dcef98ef098b070d8ffb1c3c33a0",
    "signature": "0x27831c25c0d6dbf1f6e7064de4cebc673e9230289e70755ee6e8c7ec7d7b5b9544fc80b1e388c378093816e6e79e0ec877afffc61dbf9a5a2c7966f49ad046f81b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}