{
  "manageEntity": {
    "action": "Save",
    "entityId": "1046743024",
    "entityType": "Track",
    "nonce": "0xeeffbf29d8672d509d5ff098f040d407fa2108776a408ca5e19c7081bf0bcf1f",
    "signature": "0xa0cda5c522563664b0bdc8996d7cc6d8758698e908a0f3928d8a735eefe5161347979b17daf040cdf3ef3c46610b6ea5074345170e31b5dcec20805eb5b4dbb41b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}