{
  "manageEntity": {
    "action": "Save",
    "entityId": "1625581179",
    "entityType": "Track",
    "nonce": "0x354d6a9b8b53292d184cfeeef19aad12675baa0c0fedc554aabbba2271b480dc",
    "signature": "0xf26f494d5c1faef706d15c2af476d6748522d7ef22f409069151c1ea16ae98df553b17ea4f4c59982759cc5567977e4edf113492b5dd625ed1d2cdd9c53c7a621c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}