{
  "manageEntity": {
    "action": "Save",
    "entityId": "2005846048",
    "entityType": "Track",
    "nonce": "0x7dbc330dfa2ca728c6113624bdae93173266478c1322f6794b17cd85eb7527d3",
    "signature": "0x9bd6800824c5162e61b15d5fac86668099260615f61742fba5b5a8350c909b64412b3b2032d8200f6e7aa46f0883aa11ed9a8c32a3056b06990d9636838aeb711b",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}