{
  "manageEntity": {
    "action": "Save",
    "entityId": "1199322124",
    "entityType": "Track",
    "nonce": "0x94548f2c2faa830c3591634aacf8556d9a59cc701813f27da597dc24ca8d6257",
    "signature": "0x96086a45e113b5c4be42a9a5c80500dd5647ecc799ba7f9aeccd34d5aeb83f5b4892add349bfca901039b6c9a503e0e0736e2824489dc5af7cefa87439fa31b01c",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}