{
"manageEntity": {
"action": "Save",
"entityId": "844210327",
"entityType": "Track",
"nonce": "0xc9caf2e844b707b52e3c66b9a20b896e9ba8bb791f008d5df6c6e2d164464721",
"signature": "0x10d69d2255c34d0e5815128713e8eed49f111d22a5bdaf569e14d27614924bed403e11ed2f8ae83d63ffba821d8903403fa092c67b04efa213c1ae7e44f6b0671b",
"signer": "0xF08935327AeC6306C8d0eb92999567e5496848C9",
"userId": "989073793"
}
}