{
  "manageEntity": {
    "action": "Save",
    "entityId": "1032959127",
    "entityType": "Track",
    "nonce": "0xb8a03f2b25ca01d9f69e8a6e59a4253c480f7110e6a015875dbeba552f6bba73",
    "signature": "0xe29cc070b4015cce9133deebcc7ee12e9e0dfbd0781b2c3a10ab96a9ef5e8bff3245a77b1f5e8ffd83ab3668427abd40fea0e35372556a63fd20ec3fb378569f1b",
    "signer": "0x0168976438910D2f5330323a0d0141Fb4Af95032",
    "userId": "317847"
  }
}