{
  "manageEntity": {
    "action": "Save",
    "entityId": "1459117502",
    "entityType": "Track",
    "nonce": "0x2a69b7ad0b60e96aab4243b1d1d422921bbf549926086fe0078ae92823c55b62",
    "signature": "0x87909c6cd5fe5c10196671ebc26af36587e15c6506caab4480d59c4229f106371fb8d57ca617ccfa8c0018e3425eb7dfd07fa2c514be854924cf992fe68da12e1c",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}