{
  "manageEntity": {
    "action": "Save",
    "entityId": "702733657",
    "entityType": "Track",
    "nonce": "0x83d2fafad2ce9d4e24f2338a54c2cec5707d5c1224fea95d492e221cb3ebdb4c",
    "signature": "0x1297ba449b7a20ba31e8aaa1f0138b891e221218595ca5ed62d10c3df52e28093ef1f9612b7bf6da365caf5feb5849f6918b1801b0df4d2e1862757ecb7bed791c",
    "signer": "0x0246262E4959323EAC2FBf603C6D24352d57Fc51",
    "userId": "700531000"
  }
}