{
"manageEntity": {
"action": "Save",
"entityId": "392161583",
"entityType": "Track",
"nonce": "0x8577564e7760de7710330065c85534dd0603092d46f15b8ecc294af1b84b7ebc",
"signature": "0x05ea57ecef7381ceb339bc7e3c66deba3964d978fc1ed4fe74410c92eebb2e8e785af9b0149c9c353b123dd878fb3c55a630d1dcc11aede6e80e041a11e8c8961c",
"signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
"userId": "854614078"
}
}