{
"manageEntity": {
"action": "Save",
"entityId": "1728784732",
"entityType": "Track",
"nonce": "0x204723cc3d43a3a9eb6a5fd750fbba7e1bb4beef8d8fdc462ceb9262ee8e8289",
"signature": "0x1ce17f28289d54387252bdb950f05a4e49aa36f756497de60830eb332ddf756e166625b09e8badc98f8aafb4c1d552502bf9b917d6b9eb89caf038180da727881b",
"signer": "0x2B171214e998033E806F72301307B2160CD94DdB",
"userId": "489165782"
}
}