{
  "manageEntity": {
    "action": "Save",
    "entityId": "2041443936",
    "entityType": "Track",
    "nonce": "1793730527177269186",
    "signature": "0xceb93c2d6cb3d397e3e7dd31e1ace16b6f8e3a73be32ca2ae0952a4a81c100787a04929212b2947751a64143311d5d046dc3e8db794b0e0685527af033bf39e21b",
    "signer": "0x9B241b1a6A99d662AE67D328e091Fc94faF23fdc",
    "userId": "881446128"
  }
}