{
  "manageEntity": {
    "action": "Save",
    "entityId": "2106065340",
    "entityType": "Track",
    "nonce": "0x004fe53748fec2a499727f3942b178c40bb084af6767309c26f9eed23d0fd587",
    "signature": "0xab89d0489299f14078f6e920827ec4a79dd808ace733094603bda93317d1c5ed5f439a1cea63e86844341a3699b85a2d855a319266e68cfd5c7d260f215c58571c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}