{
  "manageEntity": {
    "action": "Save",
    "entityId": "1081117319",
    "entityType": "Track",
    "nonce": "0x9c83a29c34f8a39751dac436fc35d85b88e6012f2a1a4d28904486b00bf44d8a",
    "signature": "0xf9a920e752302f182a33f5fe8752bdea55199023f2c735024f266f3e19a183f0351159fb80db65a91d9865042ef3fc9e1a62b8dbe29943e2e6111f5ec3aa497e1c",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}