{
  "manageEntity": {
    "action": "Save",
    "entityId": "83148454",
    "entityType": "Track",
    "nonce": "0xab3c4ff33f52ac514f57f9de4759ff7e01c6aa1e4df54b35fc1d5b1f0e0d34ac",
    "signature": "0x3bec2595eedcc10443167f4268ed66e0b706334acda4c5ee80a30dbf8fda97857b9ba1facb452d4673400b2ecd9de7d7e2349d2346db108a158f70661412a5de1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}