{
  "manageEntity": {
    "action": "Save",
    "entityId": "34005089",
    "entityType": "Track",
    "nonce": "0x55f36086ac9fed08d34b9950d390007e9f02c715949137ec5e5f514932e19f9a",
    "signature": "0xdc3b1a0c88a380d5f125cbe87e7eee6059a2b52fff02e02e4e2c4c0fb73e99ed4b7c3c53bbfb8c5afaad1dfa604799c73d817e6d8bbf859cf2163b38244c773b1b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}