{
  "manageEntity": {
    "action": "Save",
    "entityId": "962765174",
    "entityType": "Track",
    "nonce": "0xc6d657510510a27559859bbbfb363053fd2063ca7309db7abb1771f664620929",
    "signature": "0x2ce3210c67e6bd417abb21c664a9da66b13a331abe15eb39e9df16c12404d27156e0800f40852751235432049e5bcae26482d8d944ae296367141e3504794c861c",
    "signer": "0x742Fff9be20F80Ce7285c8Ab12B9018Ef3Cf14F0",
    "userId": "111467392"
  }
}