{
  "manageEntity": {
    "action": "Save",
    "entityId": "379605220",
    "entityType": "Track",
    "nonce": "0xf2e053251ddc632bfbc9a8c4786e8687d8ec174a3754099d6b8042b5ac02bc37",
    "signature": "0x538ac673b54bd828e1f1ef3ee47966321758bdeb36e23479e97019f31b8ff6da011629061e298e354e21c6b191bc3c8fd6a12a6033f58926d91cfbc9090d4f851c",
    "signer": "0x9369ae91F6A1cC4996D9126FD991d64e7E24c805",
    "userId": "333763354"
  }
}