{
  "manageEntity": {
    "action": "Save",
    "entityId": "41070361",
    "entityType": "Track",
    "nonce": "0x5e2326823f13f38ad854862a9dfcb6d82d509ae885b92f6f21d03827ea04358b",
    "signature": "0x94635ef967fce4e2d576807152f749d7c270316f6ef0db9581f19d033b957be54715a74c216481eb3917a3f98311eb257867c46dc2ba5375d1427b56398e3f3d1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}