{
  "manageEntity": {
    "action": "Save",
    "entityId": "1918233330",
    "entityType": "Track",
    "nonce": "0xf05100d42cab6c1afc858f9d1ddb9f40b3c62865cda2ac2155e321fef3b1ec73",
    "signature": "0xde5028c5d87f0e1a10c68360240a6e09e15c8f47df0ce48eb7974e6cdd53f98b00c712d2667639970ff4889e84ab987da81117a4aed21e2932de9867046171861b",
    "signer": "0x5A6DCd6E22135e4225594900c17114A7dAD01964",
    "userId": "580576096"
  }
}