{
  "manageEntity": {
    "action": "Save",
    "entityId": "112689733",
    "entityType": "Track",
    "nonce": "0x4a1fb0ec7a73eefd03e01089e139422a0b419f0e9962f7ec55308b2f0556b33a",
    "signature": "0x3715d6f6fe1da8b172640b18eea36cfb16836420104a2d6e08c882dbde52d0b604b3e6f053be6a5215620fd0161bc19b1d2e4e10dbcbcff7f6cd31b2831629841c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}