{
  "manageEntity": {
    "action": "Save",
    "entityId": "524219393",
    "entityType": "Track",
    "nonce": "0xf92d9754699d1a01fa07245a9f37d61f5cdc7ef058519f71cdd9aebfdb027735",
    "signature": "0x039eb416ade5a9997019113f1918025ebc23c20097b697f3d70fe5f5f789164f3322a6a64896f94fc1c43138d8f5e5c5767e0cf2d8cdb04ac739700d4a762d6f1c",
    "signer": "0xB2A34b43465721B690e6CbCfB42C0cdC30050183",
    "userId": "103086"
  }
}