{
  "manageEntity": {
    "action": "Save",
    "entityId": "982434260",
    "entityType": "Track",
    "nonce": "0x4c73f816a20b943ec40c90952275d69e6db6d255e54a466031bd1d8cf41de1d3",
    "signature": "0x0c697eea83fc3017a077e8fdb05409a86177e1b81f54fe61846d4a8acc48b2a23448e438e4af1379183d39267cd90053f1dbdb0121fe4229e7dcea60f0fe5a1c1b",
    "signer": "0x14d7618B82Da4e7176FDe32e4379943eCd69798D",
    "userId": "238125623"
  }
}