{
  "manageEntity": {
    "action": "Save",
    "entityId": "115514793",
    "entityType": "Track",
    "nonce": "0xdfc4b0eb93dd0ec09e60048cf08b55f6220d9f823ddc44f5b312d7d3260d5c72",
    "signature": "0x000b9d89acffe971432b4781b1911fe8f9337e35020b47fb2e6992546df285162f77f7eeea262a7913542648439ad6783c79a018fc6fce7339cc42c0ab89736a1c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}