{
"manageEntity": {
"action": "Save",
"entityId": "1678674620",
"entityType": "Track",
"nonce": "0x54a7210eb64045e764bd32b9866495929ac8439f94c5cb05aa57f2052ba462cb",
"signature": "0x045ddf3d6a7675e8518d6345e7a7dfdec3e95ecb22315f1b66e8b703d927f42d3af282ec19b7da148bcc87531db3cb134cfad69417654609316349461378464d1b",
"signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
"userId": "887547386"
}
}