{
  "manageEntity": {
    "action": "Save",
    "entityId": "2010046232",
    "entityType": "Track",
    "nonce": "0xa3b1cc331ed1e60a73fe7d1d55b31a88852db24ba178154d39c7dc0aa67a7595",
    "signature": "0x82b5a8279c777300ddbe10b716d00d397f977de822a44ec86b3c1cacca8ea9b96fe63a2321c93bfb83b10879ea4ebc3194efcc20171fc37290ce0608f053f4761c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}