{
"manageEntity": {
"action": "Save",
"entityId": "517105059",
"entityType": "Track",
"nonce": "0x3e93f804c045b2c7919b2ccd68a5cc10942820d61ceaad21386fd0f3fbb985a3",
"signature": "0xdeae5b447babfe92b4abc04908d316d580d2ffa57d8119baffe32d9c136e43867b70769fc3200d451242661646ec3e9923d46cdc0c7823471f4e62e0b0bddedb1c",
"signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
"userId": "636236864"
}
}