{
  "manageEntity": {
    "action": "Save",
    "entityId": "251011932",
    "entityType": "Track",
    "nonce": "0xceb91ff13cf20d5b706f73232d20e01cdb6a1135595ddf62c6776040dd0f44ac",
    "signature": "0x206d192f07148c240ff44635ff0fee2f9efaecd4684981cbc701ded81476bd085a38af54181ff3465e0310b201b2cd1b42208206ac0097fca61b194b5ef7c1041b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}