{
"manageEntity": {
"action": "Save",
"entityId": "329974654",
"entityType": "Track",
"nonce": "0xa939e496f9bd20b4b7165103ee7b7cf1ca43516d6126800522037bc25c23361a",
"signature": "0xd7fe2efdbe0c0b56f6103abb1117b6eca27f7ec10cc48efbf61288638a2b917d02c4953a7e0eee0c7bbbea3a8d4f4d7ce6977e7e80addb127a1c4ee30e285f651c",
"signer": "0x2F7db4C1AE3922aD0f32CEdED1870278dd17b64b",
"userId": "467213409"
}
}