{
  "manageEntity": {
    "action": "Save",
    "entityId": "109564110",
    "entityType": "Track",
    "nonce": "0x687009fe36427a89fb8baf68ffa600612460f0455ac769938997fbbef03afe8c",
    "signature": "0x00c35f81d822933c399b596ca85de7cf6ce3c08f713a3e5104a757523677528f53994a7aa3ddbfdb427ddc1aa4b96df746a0712fffe3f90089f6697e2514ff6f1c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}