{
"manageEntity": {
"action": "Save",
"entityId": "978905925",
"entityType": "Track",
"nonce": "0xdca0e0f5641fd88c5158a5d691a5f36a36fe1875a802be329ee233c58aa098b3",
"signature": "0xbcd6ec7a604bda9b086eaf7129cdc287629563307221b0659d6ecc1f67539b3e3e79ee9462685f1fd6b27a25943006189c1aef59a61ec3b36270d0d821dc6f231c",
"signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
"userId": "636236864"
}
}