{
"manageEntity": {
"action": "Save",
"entityId": "727291364",
"entityType": "Track",
"nonce": "0xde690127a3dbf42ef58007a6bce7e32e380aeb4acd0e0be7c071c83736df268d",
"signature": "0x65e56b15553a4502531fc1e28823f67994af361a2fcb20a316174190e5b338283eac18f9ece66a6d40a7471d81f3ff3f914ad441ca27bf16cbea4b5824fa06da1c",
"signer": "0x568426a5D555ADe94657d547B2Df4a4dc1f0C014",
"userId": "71569007"
}
}