{
  "manageEntity": {
    "action": "Save",
    "entityId": "1892315833",
    "entityType": "Track",
    "nonce": "0xf393ea851970f841894644a0896f2215883f53dbffe90d79d96d2256c5412ecf",
    "signature": "0x2f77b0cd62c28c9c20a0dcd3d014a609686773d1d0354761198ba3b075ee6e0d06c0e68bab171efc7226b5c9fd1e645ac4d87945326e04d9da88a76f22b8ca3f1c",
    "signer": "0x01eB7915E4941D64a8ddf370bE06647ad5F79d4e",
    "userId": "911613164"
  }
}