{
  "manageEntity": {
    "action": "Save",
    "entityId": "227376",
    "entityType": "Track",
    "nonce": "0x8ba8d3edcb90f1ff0f99c79c27fa653eb6db35e9844158758ef38c99b2888da2",
    "signature": "0x5c31dbdaaaace18d490568bf37fd397bafde2e11e50b019e4422d329d5e311af0d26d2dd116664f7fa496e5b413fa97b78470a9facf49cb4c3eb24aaf5e1f5441b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}