{
  "manageEntity": {
    "action": "Save",
    "entityId": "1595007905",
    "entityType": "Track",
    "nonce": "0x3f1e7873fa00b15b71130b40be71a1bf761ab1f77bfed24dcef2410a87e3b637",
    "signature": "0x00ad8135aacb3cd030074e1ea76ae8f81528d4122a761cea3ebf5162ce4ef5e25667cba91c1e8488c09fd612bab077fd33a559dac07f53b076c349d312c9e1841c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}