{
  "manageEntity": {
    "action": "Save",
    "entityId": "169079",
    "entityType": "Track",
    "nonce": "0xc6d5fe808f5915c69fd77402876237681160c00b4ad51b5dc548493c57809cb6",
    "signature": "0xe87944d8f23487c6ff7154f9f5cb337a5146a2f08ee65637a942d17e690b5649738e1dfffb6355010af8853955bde2564ed1b28dc81449766e0af85e98e3275b1b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}