{
"manageEntity": {
"action": "Save",
"entityId": "1340524962",
"entityType": "Track",
"nonce": "0xda6835cc6b895595aa478821cb8c82af1c97a03ab3e020534aee407f06da0122",
"signature": "0x39efcfc736d28c397a1405dbf8c69f58904f009d157b60ec290d899cb04769bf2bab6c7316efc2c547d6e1a7a14f35b193d6af630440a56a8c936fe68a9708441b",
"signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
"userId": "280440301"
}
}