{
  "manageEntity": {
    "action": "Save",
    "entityId": "1133127838",
    "entityType": "Track",
    "nonce": "0xc65ec8d6c949f18c10c39ba0968c56e430e9d87625550e3487d3351058d7ca1e",
    "signature": "0xcc0b471dae2ab2edccfa6250fed451099ebf03055defa3413a98f2552da01f9e7abab322c6a137c1a0ce16ff7bde9874449885d5be07de7d978dafd4b18481df1c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}