{
  "manageEntity": {
    "action": "Save",
    "entityId": "351588158",
    "entityType": "Track",
    "nonce": "0xf84efe57f8d7435b851378d44ec4630c20eb40499ffa87f685cddd7823de923c",
    "signature": "0x31fc29c149d5a7e32331f5d28f2a3c3dfc84a0e885e592cebce4a0d0995ad9594ba21df197e4ebc5939690374137d7e9c5dd51d084a95e79b382be1a3b1d061a1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}