{
  "manageEntity": {
    "action": "Save",
    "entityId": "1186053598",
    "entityType": "Track",
    "nonce": "0xe7a5c527f79c2755dd19d54d0d463a001f9f5fe28a4a58457839b40ad4edd6dc",
    "signature": "0x8fff74a4f3ed32b6718988697f0785c775d26ee46d537a483b203d9e4d558d1f6dfa3b83182248300d0e9768424080a32b0400ed40d5d9fdcb2a8a3603ffe7131c",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}