{
  "manageEntity": {
    "action": "Save",
    "entityId": "822502734",
    "entityType": "Track",
    "nonce": "0xb0e55fe0b7a66ae6e803c78803841704b6ab2f66a9297d941a818a66167a66c6",
    "signature": "0xb45faeb601d78ad890d4b6c1fc7f28360771d030051c55596135fc8f7b21b3686176094d7b0b43d5af1083874ce9d1717182acd282e0e1fadb3d7655ea711d351b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}