{
  "manageEntity": {
    "action": "Save",
    "entityId": "2002710037",
    "entityType": "Track",
    "nonce": "0xe8e10d1095a55229779552ba7baf34524283aa4acc53da9ca7f1c1103aaa84d9",
    "signature": "0x775163f74a38b875730d4964f526db045eadcfccc26cd5b671cf789e028c92dc2af2b3b573fd27fe88dd46960dfde56edba9410968823018e38d8119460376bf1c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}