{
  "manageEntity": {
    "action": "Save",
    "entityId": "727654882",
    "entityType": "Track",
    "nonce": "0xdac34526466cf2067a81435573cbc06918e3d6b78a9a12939625567e0032f02e",
    "signature": "0x560e551fcf578f58dfade69ef14784389757212cd3b9d292ecaedd4ddffc92dd5ce6d734b4cc9fe5eec668b5a48773712844d7614ddd80cc6fcd8d1d530765281b",
    "signer": "0xcdc1772589e70ee6667FAaC93E3F0CcD5BFDa2aE",
    "userId": "354908"
  }
}