{
  "manageEntity": {
    "action": "Save",
    "entityId": "541160",
    "entityType": "Track",
    "nonce": "0xf26bb2100090e910086dee70bdd3112ab5f947283fbd73be12b38f1ad03e54c9",
    "signature": "0xbe9752515344e630a051e6592928accd730e71cdf6e08a6a6c7614cf6ca2725353d7cd1232165da55a65b189423ea00fa959159bef777ce216c851dd7f3d9cc41b",
    "signer": "0x4086Dda2D91F77cd46De0859a4de37F888508faA",
    "userId": "568518925"
  }
}