{
"manageEntity": {
"action": "Save",
"entityId": "801513303",
"entityType": "Track",
"nonce": "0xa2b93dfd1be60c7ce6c227bec3925642224554b8761b1c8ba65c98a90af07cd3",
"signature": "0x057dd57f81a576ff895909bd690b9c8ab0bbbec1f234e9840467ed61d6b7e1273a60967d0594f49e6791d9a85eb59d9ca0066e2d8b48cd5b5a0c30c202dff3aa1c",
"signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
"userId": "981716494"
}
}