{
  "manageEntity": {
    "action": "Save",
    "entityId": "292134064",
    "entityType": "Track",
    "nonce": "0x510d87a7671bf025d08f86ed62c13b9e68a2ca0aa32f8d29d6d1a9673595d702",
    "signature": "0xe944ae42c1d3a305190bc508b4ba8cdd36a69ee14779cd24a3b5f42b6d6228ff425b9aec6c5fb1db41822a5bed7e9837f76dfb6cbf075c2db806fc6f9f2764bc1c",
    "signer": "0xb6B208a8f79b1D88d245afa5aDB0a40d38cd6DD1",
    "userId": "528688046"
  }
}