{
  "manageEntity": {
    "action": "Save",
    "entityId": "616102984",
    "entityType": "Track",
    "nonce": "0x86a3b14cab3712578afe4e50952029e0557396c4a35ea795fd1d3f8e7ae8cb09",
    "signature": "0xdb6272b9f4a0cac4c80e8f2135683951a31b98a19dd1b5b3f05025ec7c0fe3bc1749dc92f72584e1aeb894e47d6fd542d3b974254808935e1b84e2fa0ddad45b1c",
    "signer": "0x05D4434893815F914255C028DF9Da0a3e11FE0E8",
    "userId": "181835656"
  }
}