{
"manageEntity": {
"action": "Save",
"entityId": "422267708",
"entityType": "Track",
"nonce": "0x4c4c27a3af0cfd7ed534c62c3aad12c618332ee1df53189187ae2ad114d139be",
"signature": "0xad29d923f7fe27b7d8bab79e8353850e7657607bee61edb36ca0f1d58e03393c65708c2abfa2e3fc57ae8239e1598f643dfeebc8a4e0e5dbd7bc134f4e7716391c",
"signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
"userId": "887547386"
}
}