{
  "manageEntity": {
    "action": "Save",
    "entityId": "1926860918",
    "entityType": "Track",
    "nonce": "0xd80a2620ed8aa64e0115e8e4c986fb5d946ddbbc9589b0469284aa7e23c01269",
    "signature": "0xd3dd7ca2ded423db998a6470e73225984504133028c188b39f86e45a35aac6944a8d43129b415a675248b7b988cbe04a4c18702612832ad35a6e7e6920bdb7d51c",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}