{
  "manageEntity": {
    "action": "Save",
    "entityId": "118551911",
    "entityType": "Track",
    "nonce": "0x05a96222960a316a6b01ed943c149efa93a2fcbd891158c0d7e3abb4ca06784d",
    "signature": "0x90935923c118edc2edaeea6c4d6814fd839af704220f094d13eb243a82cd1bef09fa9d42b6dd6ef22345808527c7e6c92fed361fca3319a7c53bf659633ef5431c",
    "signer": "0x261c17dd7171Ea18B7ffF1AbB7D0495fEa0dB0ad",
    "userId": "185086709"
  }
}