{
  "manageEntity": {
    "action": "Save",
    "entityId": "1132405260",
    "entityType": "Track",
    "nonce": "0xd968fc6fe8209cb18ed0082f85632f2b053c62b19765d8f66456732a5b82a939",
    "signature": "0xc95d57590fc3041cdc390d2d1ab459a3c9dad05859a89c21b356ee78c55f53a152f64f17565dc5259406a8120c4357257000bb61d0198cd5f908f8cfb4904e7d1c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}