{
  "manageEntity": {
    "action": "Save",
    "entityId": "84331",
    "entityType": "Track",
    "nonce": "0x26c2d43ebd690193e54cf136ed5ab07c8f9565d133829cf0437555b7aae65532",
    "signature": "0x9504eaf3df5e50d0093aab3babb6d2d27958d118d7a5bdd80357bb244df4dbca63240fdc5810dbad461a216538f0265c9b78ff6364a2a65935ea1010b7ee4d7b1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}