{
  "manageEntity": {
    "action": "Save",
    "entityId": "1262284565",
    "entityType": "Track",
    "nonce": "0xf3c98fddfc11708a065b720f68570671fdcaf39c9bd5c5910bd6f439c1d2d18c",
    "signature": "0xa54d01c7447c67c59769c00d25439af459bc5c80d98bb5586dfef6fd244751013c82108dfca00c85ab7ded85b9f604e04e422f239e7dcff7722ef3a4ddce14af1c",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}