{
"manageEntity": {
"action": "Save",
"entityId": "1273497248",
"entityType": "Track",
"nonce": "0x28459f65ad8ad87709a5449f30eff7512fbaa7645e3292f7d56aca30ab7a942c",
"signature": "0xecfec1f8e2cdddcbc755d22b090a194c3374accb1fbdd6fc523bfb7d631a496343bcba902c2ce327e70ac46d4c1aaaa2636d9808008d99d1053405c9c6a3c5181b",
"signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
"userId": "636236864"
}
}