{
  "manageEntity": {
    "action": "Save",
    "entityId": "114122586",
    "entityType": "Track",
    "nonce": "0xdf8ccd046533913903b3ab923b20dbe8c62022145d65c10294451d1a626cb841",
    "signature": "0xe4c900f5fcf35ba4b1ecbf51e931fc21ad78ef515387248c061067aabe2efa5734a4d68afe5f7d834418f71f2d28109cd5197082fe40774d7c374ff1dcb8e8601c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}