{
"manageEntity": {
"action": "Save",
"entityId": "1840381949",
"entityType": "Track",
"nonce": "0xe57bc12584e88c583fe69ab518c3a5e272a9ec9ef887fbe586fbab6a6d6df2dd",
"signature": "0x568d0dd9c2a0319cc165b41e6e3f28c0b3886a8e517b31d76fa318008a6ce5ad290f09831d382ca24b5f3c4f2c38887d919256261c10c969fec8a2df25bf71c51c",
"signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
"userId": "636236864"
}
}