{
  "manageEntity": {
    "action": "Save",
    "entityId": "55163081",
    "entityType": "Track",
    "nonce": "0x4b6c5ebb6a72e69e201f0cba9cb533bc796060763ad37a8f655722b73e14bc10",
    "signature": "0x3c7bd08074593515667b548502de3f7079ea4daa13cb9347cc5d3abd4310e2ca70c7aa0a8472b4d53e5b20b2a3425b8c2b0fe99b409f5a042dd2225ffe47ef4e1b",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}