{
  "manageEntity": {
    "action": "Save",
    "entityId": "324111",
    "entityType": "Track",
    "nonce": "0x36fb8e4b4d78049a59d51ba891670941f9079e6b7d187f230a20f1a58d2054cc",
    "signature": "0xcd2a28d1779de78ca0af05a578b755953549b14458c9d3e610b31b5c4352621c37fee4d4bcfe2bcc686aeb1694543ace8134da63a21836e964a589663e1c9a3c1c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}