{
  "manageEntity": {
    "action": "Save",
    "entityId": "127394241",
    "entityType": "Track",
    "nonce": "0xd52aacff74ed97270532716d37da285e5f494083bbaa734bf62b37d9982c4b7e",
    "signature": "0x94b68f0b2def52e40029c37a043ed6d541c45df2405b0718e05bb9809284480963e10aac87ce0531ad72b2debff2696bbd921e806ee2796cbddee40a9dcb6ce11b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}