{
  "manageEntity": {
    "action": "Save",
    "entityId": "835396124",
    "entityType": "Track",
    "nonce": "0x0bf236544153b6375feee4e3b956584589ca7333bfca189ec9a7e461d82114b2",
    "signature": "0x32d1dcf837dd10e9e1d5bfe9c65707898e2ec8f931ac5301806671cd268073fb6731e3bf21f47918cd4382cf3418b6418d67be988b6a2a1581277d49548234501b",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}